[00:26:13] EX2107_DIVE05 ROV powered off [04:42:29] christarabenold leaves the room [11:05:59] EX2107 DIVE06 Test message [12:36:59] EX2107_DIVE06 ROV Launch [12:44:57] EX2107_DIVE06 ROV on Surface [12:45:55] EX2107_DIVE06 ROV Descending [12:46:36] LAT : 30.19091 , LON : -76.16539 , DEPTH : 14.2932 m, TEMP : 25.9809 C, SAL : 36.63237 PSU, DO : 6.6715 mg/l, TURBIDITY : 0.6838 FTU [12:51:37] LAT : 30.192273 , LON : -76.164118 , DEPTH : 55.6346 m, TEMP : 25.05525 C, SAL : 36.72176 PSU, DO : 7.06869 mg/l, TURBIDITY : 0.7875 FTU [12:55:57] johnreed leaves the room [12:56:37] LAT : 30.193333 , LON : -76.162882 , DEPTH : 56.0852 m, TEMP : 25.17071 C, SAL : 36.71642 PSU, DO : 7.04305 mg/l, TURBIDITY : 0.7753 FTU [13:01:38] LAT : 30.193797 , LON : -76.162747 , DEPTH : 93.0387 m, TEMP : 21.91149 C, SAL : 36.80789 PSU, DO : 7.22991 mg/l, TURBIDITY : 0.812 FTU [13:06:38] LAT : 30.19391 , LON : -76.16278 , DEPTH : 222.0366 m, TEMP : 19.28679 C, SAL : 36.68299 PSU, DO : 6.67074 mg/l, TURBIDITY : 0.8486 FTU [13:11:39] LAT : 30.194229 , LON : -76.162324 , DEPTH : 374.2598 m, TEMP : 18.6368 C, SAL : 36.61746 PSU, DO : 6.60333 mg/l, TURBIDITY : 0.8791 FTU [13:16:40] LAT : 30.194351 , LON : -76.162122 , DEPTH : 522.7374 m, TEMP : 16.68806 C, SAL : 36.27153 PSU, DO : 5.73466 mg/l, TURBIDITY : 0.8913 FTU [13:21:29] iscwatch leaves the room: Replaced by new connection [13:21:41] LAT : 30.19415 , LON : -76.162273 , DEPTH : 666.0406 m, TEMP : 14.07741 C, SAL : 35.85411 PSU, DO : 5.25141 mg/l, TURBIDITY : 0.8852 FTU [13:26:41] LAT : 30.19401 , LON : -76.162524 , DEPTH : 822.9656 m, TEMP : 10.31564 C, SAL : 35.3424 PSU, DO : 4.67749 mg/l, TURBIDITY : 0.8913 FTU [13:31:42] LAT : 30.193833 , LON : -76.162599 , DEPTH : 974.8476 m, TEMP : 7.27201 C, SAL : 35.13026 PSU, DO : 5.71449 mg/l, TURBIDITY : 0.8974 FTU [13:36:43] LAT : 30.193356 , LON : -76.162452 , DEPTH : 1121.4533 m, TEMP : 5.41461 C, SAL : 35.06952 PSU, DO : 7.33757 mg/l, TURBIDITY : 0.8791 FTU [13:41:44] LAT : 30.193029 , LON : -76.162587 , DEPTH : 1271.7786 m, TEMP : 4.71876 C, SAL : 35.02267 PSU, DO : 7.9559 mg/l, TURBIDITY : 0.8791 FTU [13:46:44] LAT : 30.192864 , LON : -76.162826 , DEPTH : 1416.5293 m, TEMP : 4.52425 C, SAL : 35.00855 PSU, DO : 8.04173 mg/l, TURBIDITY : 0.8791 FTU [13:51:46] LAT : 30.192531 , LON : -76.163067 , DEPTH : 1569.2935 m, TEMP : 4.28817 C, SAL : 35.00153 PSU, DO : 8.14285 mg/l, TURBIDITY : 0.8669 FTU [13:56:46] LAT : 30.192183 , LON : -76.163269 , DEPTH : 1718.4586 m, TEMP : 3.96581 C, SAL : 34.98129 PSU, DO : 8.30772 mg/l, TURBIDITY : 0.873 FTU [14:01:46] LAT : 30.191984 , LON : -76.163254 , DEPTH : 1866.163 m, TEMP : 3.70787 C, SAL : 34.96603 PSU, DO : 8.29003 mg/l, TURBIDITY : 0.9158 FTU [14:06:46] LAT : 30.191739 , LON : -76.163298 , DEPTH : 2019.2503 m, TEMP : 3.4784 C, SAL : 34.95385 PSU, DO : 8.33508 mg/l, TURBIDITY : 0.8669 FTU [14:09:45] Apologies for the lack of updates here. Taking care of Dive Summary from yesterday's awesome dive. [14:10:23] We are just past 2100 meters, headed for 3740 m start of transect up the Blake Spur Wall. [14:11:27] Takes awhile to go more than 2 miles deep! [14:11:47] LAT : 30.191542 , LON : -76.163266 , DEPTH : 2166.0843 m, TEMP : 3.33104 C, SAL : 34.94846 PSU, DO : 8.31699 mg/l, TURBIDITY : 0.8791 FTU [14:16:48] LAT : 30.191418 , LON : -76.16317 , DEPTH : 2303.4718 m, TEMP : 3.16458 C, SAL : 34.94323 PSU, DO : 8.34912 mg/l, TURBIDITY : 0.8669 FTU [14:19:44] allencollins leaves the room [14:20:26] We are at 2300 meters, as you can see in okexnav chat. . . [14:21:49] LAT : 30.191349 , LON : -76.163107 , DEPTH : 2303.3118 m, TEMP : 3.16301 C, SAL : 34.94329 PSU, DO : 8.33844 mg/l, TURBIDITY : 0.8669 FTU [14:22:00] emilycrum leaves the room [14:25:37] Dive brief moved to 10:45. [14:26:07] ROV still needs to descend about 1300 meters. [14:26:50] LAT : 30.191389 , LON : -76.162687 , DEPTH : 2387.2291 m, TEMP : 3.05532 C, SAL : 34.93824 PSU, DO : 8.31332 mg/l, TURBIDITY : 0.873 FTU [14:27:42] allencollins leaves the room [14:31:51] LAT : 30.191195 , LON : -76.16265 , DEPTH : 2537.4507 m, TEMP : 2.88779 C, SAL : 34.92969 PSU, DO : 8.34249 mg/l, TURBIDITY : 0.8547 FTU [14:36:52] LAT : 30.191056 , LON : -76.162456 , DEPTH : 2676.1487 m, TEMP : 2.79646 C, SAL : 34.92621 PSU, DO : 8.30898 mg/l, TURBIDITY : 0.873 FTU [14:37:46] kensulak leaves the room [14:39:55] allencollins leaves the room [14:41:52] LAT : 30.19098 , LON : -76.162249 , DEPTH : 2829.0321 m, TEMP : 2.7664 C, SAL : 34.9234 PSU, DO : 8.35384 mg/l, TURBIDITY : 0.8791 FTU [14:44:12] allencollins leaves the room [14:46:52] LAT : 30.191072 , LON : -76.162244 , DEPTH : 2977.4728 m, TEMP : 2.74425 C, SAL : 34.9211 PSU, DO : 8.37594 mg/l, TURBIDITY : 0.8669 FTU [14:47:02] carolynruppel leaves the room [14:47:54] Making our way. Another couple 100 meters until D2 is two miles down. [14:49:09] Predive brief now [14:49:38] This wall is taller than the grand canyon is deep. [14:50:04] Color correction happening now [14:51:07] Live stream three has Mapping Lead Sowers speaking about dive site [14:51:53] LAT : 30.191299 , LON : -76.162227 , DEPTH : 3127.1811 m, TEMP : 2.52763 C, SAL : 34.91182 PSU, DO : 8.28417 mg/l, TURBIDITY : 0.8791 FTU [14:54:41] allencollins leaves the room [14:56:35] Color correction complete. D2 camera moving through water column , roughly 3260 m [14:56:53] LAT : 30.191326 , LON : -76.162362 , DEPTH : 3271.7377 m, TEMP : 2.46543 C, SAL : 34.90679 PSU, DO : 8.23808 mg/l, TURBIDITY : 0.8913 FTU [14:58:25] allencollins leaves the room [14:58:55] annaklompen leaves the room [15:00:32] carolynruppel leaves the room [15:01:53] LAT : 30.191359 , LON : -76.162415 , DEPTH : 3417.2989 m, TEMP : 2.44061 C, SAL : 34.90375 PSU, DO : 8.2276 mg/l, TURBIDITY : 0.8791 FTU [15:05:14] stevenauscavitch leaves the room [15:06:54] LAT : 30.191087 , LON : -76.162571 , DEPTH : 3581.5334 m, TEMP : 2.36461 C, SAL : 34.89994 PSU, DO : 8.21937 mg/l, TURBIDITY : 0.8913 FTU [15:07:06] emilycrum leaves the room [15:09:49] adamskarke leaves the room [15:11:55] LAT : 30.191431 , LON : -76.162815 , DEPTH : 3625.076 m, TEMP : 2.34145 C, SAL : 34.89769 PSU, DO : 8.19578 mg/l, TURBIDITY : 0.8974 FTU [15:11:59] Days of the Year website states "Most people feel that the informal origins of Jellyfish Day likely stem from a group of enthusiastic marine biologists–or simply through those who merely respect the simplicity of these strange and yet beautiful creatures. " So, ambiguous on why today... [15:12:40] Certainly we have 2 enthusiastic biologists leading this expedition who sound almost giddy about jellyfish day, or at least seeing this wall! [15:13:00] allencollins leaves the room [15:14:10] Found similar explanation on my end as well [15:16:46] upasanaganguly leaves the room: Replaced by new connection [15:16:55] LAT : 30.191304 , LON : -76.163477 , DEPTH : 3635.7776 m, TEMP : 2.34094 C, SAL : 34.89821 PSU, DO : 8.17891 mg/l, TURBIDITY : 0.8974 FTU [15:18:42] emilycrum leaves the room [15:19:31] Hello all [15:19:41] michaelvecchione leaves the room [15:19:56] Hello Asako [15:20:08] meganmcculler leaves the room [15:20:12] Hello Allen! [15:21:13] Those were general comments for the listening audience, not pre-requests for collections! [15:21:39] EX2107_DIVE06 ROV on Bottom [15:21:41] Don't be shy [15:21:56] LAT : 30.191409 , LON : -76.163481 , DEPTH : 3653.6416 m, TEMP : 2.35898 C, SAL : 34.89705 PSU, DO : 8.24355 mg/l, TURBIDITY : 0.9585 FTU [15:22:24] Mashkoor Malik [15:22:28] Malik is Mashokoor's last name [15:24:29] annaklompen leaves the room [15:25:30] I've been corrected for this too! [15:26:22] Hello everyone [15:26:55] I see a lot of rock rubble here, so may be a good place for a rock collection, if you are doing that. [15:26:57] LAT : 30.191382 , LON : -76.16356 , DEPTH : 3653.4529 m, TEMP : 2.34731 C, SAL : 34.89522 PSU, DO : 8.14926 mg/l, TURBIDITY : 0.9035 FTU [15:27:01] allencollins leaves the room [15:27:56] I'm going to put in this chat an abstract from a 1999 paper by Lewis Land, Charlie Paull, and Fred Spiess re. the escarpment; Marine Geology, vol 160 [15:28:28] Deep Tow surveys conducted at two sites at the base of the Blake Spur and Blake Escarpment serve to delineate the contact between Mesozoic platform carbonates of the Blake Plateau and adjacent abyssal strata. The continental margin in the surveyed areas consists of steep limestone cliffs and headlands with over 2 km of relief. This extreme topography distorts the hydrographic structure of the water column and intensifies abyssal current flow in the surveyed areas. (Part 1) [15:28:53] Part 2 Significant lateral scarp retreat is indicated by the presence of broad, nearly horizontal benches of Mesozoic limestone presently exposed at the base of the Blake Spur and Escarpment in 4.5–5 km water depth; and by angular, apparently truncated limestone ledges that crop out on the cliff face. At the Blake Spur, the contact between Mesozoic platformal limestones and basinal Tertiary strata does not occur directly at the foot of the cliff, but is exposed on the abyssal plain within a 50 m deep erosional moat. [15:29:20] Here, strong (>2 knots) south-flowing bottom currents occur within 100 m of the sea floor. The coincidence of this vigorous current flowing within the moat near the base of the escarpment and the eroded character of the sea floor suggests that currents are an important mechanism in sculpting this abyssal headland and contributing to lateral scarp retreat. Similar erosional processes are indicated along the Blake Escarpment near 29°03′N, where the relatively straight cliff face is interrupted by occasional steep-walled box canyons. [15:29:40] You can seek out the rest at DOI: 10.1016/S0025-3227(99)00012-2 [15:30:22] The escarpment forms at the Blake Spur Fracture Zone (FZ), which extends to the Mid-Atlantic Ridge. This FZ is sometimes considered more properly a non-transform offset b/c it has only about 20 km offset across the fracture zone. [15:31:15] The name of the sponge that last one reminded me of was Euretidae (which I realize has lots of diversity within it) [15:31:41] The FZ disrupts ~~140 million year old (Ma) crust formed at the Mid-Atlantic Ridge. One strange aspect of this particular low-offset (but very long) FZ is that it has quite thin crust, meaning that the mantle (Moho) is at relatively shallow depths. [15:31:54] @Carolyn: thanks! [15:31:58] LAT : 30.191521 , LON : -76.16354 , DEPTH : 3650.4112 m, TEMP : 2.35044 C, SAL : 34.89892 PSU, DO : 8.16663 mg/l, TURBIDITY : 0.8974 FTU [15:32:01] Tabnks Carolyn [15:32:08] Carolyn - very nice synopsis of the origin of the dramatic topography here, Thanks [15:33:00] Lot to digest, but will see if I Can get some of that across while gazing at these sponges. [15:33:47] Can an estimate be made of the direction and magnitude of the bottom current that appears to be affecting the ROV track? [15:34:31] Round sponge looks like Hyalonematidae. [15:34:44] Main point: Escarpment is a steep limestone cliff at edge of Blake Plateau. The escarpment is slowly stepping back as it is eroded. Bottom currents shape the escarpment, but the escarpment also affects the bottom water regime. [15:34:48] Also, what's the ROV heading and/or the direction in which the camera is pointing? [15:35:05] cristianacastellobranco leaves the room [15:35:22] The thin fans look similar to Tretopleura. Could we please get a zoom on them to get more detail? [15:35:39] Standby Nolan - taking wtare sample [15:36:00] I have no doubt there will be plenty of sponge close-ups ahead! [15:36:17] Oh yeah, whenever yall are have time. Not a priority. [15:36:34] allencollins leaves the room [15:36:44] Oh a collection, sweet! [15:36:57] LAT : 30.191436 , LON : -76.163605 , DEPTH : 3651.0157 m, TEMP : 2.35107 C, SAL : 34.89761 PSU, DO : 8.17859 mg/l, TURBIDITY : 0.8852 FTU [15:37:09] We will collect that sponge [15:38:44] Very Tretopleura like. [15:39:21] Well - via email Allen gently corrected my outdated taxonomy for yesterday's Chaunacops. That prompts me to send out a kudo to dearly-departed Uncle Dan Cohen, one of Allen's predecessors at NOAA-Smithsonian. He earned the name Uncle Dan from a horde of VIMS graduate students studying deep-sea fishes. And he was in fact the De Facto major professor of many of us in the profession. At some point, VIMS (College of William & Mary) should have conferred an honorary degree upon Dan. Dan would have been less gentle in pointing my error. He had a rauchous laugh. I can hear him saying "HA - HA - Ha - so Sulak, you dummy, you messed up again!" [15:40:04] I am also seeing flat, thin veil-like sponges on the rocks without stalks. These look like Chonelasma in the Euritidae family. [15:40:50] cristianacastellobranco leaves the room [15:41:25] I didn't realize how small these were. The Tretopleura I am used to seeing a much bigger. Maybe all young and similar recruitment timeline? [15:41:58] LAT : 30.191557 , LON : -76.163625 , DEPTH : 3649.4219 m, TEMP : 2.341 C, SAL : 34.89578 PSU, DO : 8.13173 mg/l, TURBIDITY : 0.8852 FTU [15:42:16] Or slow growing. HArd to say @Nolan. [15:42:31] Keep that info coming though. Appreciated. [15:42:37] @Allen Very true. [15:42:59] I'll try, in and out of the lab today. Good luck and I look forward to hearing about any sponge collections! [15:43:07] emilycrum leaves the room [15:43:41] Also, in general, the deeper you go the smaller most animals tend to be (of course, there are the gigantism exceptions) because of the lower energy availability. [15:44:54] its really cool view that there are such a dence community of corals and sponges > 3600m! [15:45:24] meganmcculler leaves the room [15:45:38] Scott - so all those glass finger knifing upward into the benthic boundary layer, makes me wonder about the ambient long-term energy availability. Has to be a sustained abundance of food to keep all these sponges alive and proliferating??? [15:45:41] cristianacastellobranco leaves the room [15:46:48] The suspended material is likely being brought to the site by the generally southward-flowing bottom currents rather than being advected off the shelf. [15:46:52] @Ken: for sure. And the decent sized, though so far less abundant, corals. I suspect the wall itself accelerates the local currents (as Carolyn indicated) and helps with that food provision. [15:46:58] LAT : 30.19161 , LON : -76.163698 , DEPTH : 3651.7615 m, TEMP : 2.34862 C, SAL : 34.89526 PSU, DO : 8.21617 mg/l, TURBIDITY : 0.8852 FTU [15:47:56] More work on stable isotope signatures of deep-water sponges is needed. Work I did a few decades ago showed very atypical 34S signatures for glass sponges, suggesting perhaps they specialize on the most refractory left over, resuspended organic particles remaining after all the othe microvores got the good stuff [15:48:18] Somewhere in this general area Amatzia Genin long ago (early 80s, I think) reported on dense communities of black corals living where the currents were accelerated. I'll have to dig up that paper to see where they were relative to here. I think likely shallower. [15:48:32] cristianacastellobranco leaves the room: Replaced by new connection [15:49:17] I must get ready to go lecture on Inverts. Should just show the dive! [15:51:13] Serios is backing away so D2 is following away from the substrate [15:51:33] annaklompen leaves the room [15:51:41] Good job dealing with a delicate organism using a massive, somewhat clunky manipulator. Some day, some one is going to construct a human-hand like manipulator operated by a GameBoy glove controller. [15:51:58] LAT : 30.191617 , LON : -76.163608 , DEPTH : 3650.3319 m, TEMP : 2.35784 C, SAL : 34.90283 PSU, DO : 8.16295 mg/l, TURBIDITY : 0.9035 FTU [15:52:34] allencollins leaves the room [15:52:42] The GFOE Team is always amazing! [15:52:49] Oh, they are working on it Ken! [15:53:39] That was meaning signing out for the next hour. [15:53:48] Will call back after class. [15:54:18] It amazes me that we are still using heavy-duty hydraulic manipulators of the type designed to turn valves on deep-water well-heads [15:56:58] LAT : 30.191548 , LON : -76.163668 , DEPTH : 3651.3899 m, TEMP : 2.30884 C, SAL : 34.89632 PSU, DO : 8.18631 mg/l, TURBIDITY : 0.8913 FTU [15:58:27] As amazing as space tourism is, I would much rather do deep sea tourism to see the amazing biology and geology there! [15:59:27] we are on the flying magic carpet for the deep sea tour :) [15:59:46] Given the fragile character of the flat sponges it seems unlikely that there have been strong bottom currents here for a while since they would break the sponges. So while bottom currents may be making the currents stronger, the currents aren't that strong. [15:59:52] Looking at the dead sponge skeletons, they are maxing out at about the same size as the largest living ones. [16:01:00] @Asako Yes indeed! Watching these dives is one of my favorite activities! Super stress relieving! [16:01:48] Is there any indication that the flat sponges are preferentially on one side of the rocks? The video suggests that they are mostly on the "other" side of rocks, but it may be difficult to see the sponges that are pointing toward the camera. [16:01:59] LAT : 30.191492 , LON : -76.16367 , DEPTH : 3648.9761 m, TEMP : 2.33127 C, SAL : 34.89739 PSU, DO : 8.15153 mg/l, TURBIDITY : 0.9035 FTU [16:02:34] @Allen If Stephanie spots what she thinks are any demosponges, definitely take a zoom. This is the lowest depth range of demosponges and they are rare. If they don't end up being demos, then the hexactinellids that they probably are would also be quite interesting. [16:03:06] One of the deficiencies with the otherwise excellent OKEXNAV data stream is the absence of bottom current data. I realize the ROV is often moving, but also often holding position, and then good data on current velocity and direction can be obtained. Would be nice to see it included in the data stream viewable on the Chat navdata page [16:04:58] hi here [16:05:34] Hi @Tina! [16:06:52] I am seeing some Rossellid fluffy barrel sponges. [16:06:59] LAT : 30.191423 , LON : -76.163832 , DEPTH : 3651.2293 m, TEMP : 2.31249 C, SAL : 34.89609 PSU, DO : 8.15767 mg/l, TURBIDITY : 0.8974 FTU [16:07:29] annaklompen leaves the room [16:08:10] with anemone on back [16:08:38] The navdata is good but it doesn't include the heading of the ROV or camera. [16:09:17] I am going to say that wavey sponge that we zoomed on just after the white round sponge is Farreidae, but I am not going further then that. [16:10:57] ophiacanthid [16:12:00] LAT : 30.191411 , LON : -76.163856 , DEPTH : 3649.222 m, TEMP : 2.32125 C, SAL : 34.89632 PSU, DO : 8.31035 mg/l, TURBIDITY : 0.8974 FTU [16:12:04] Hi @Tina! [16:12:07] I wonder if they are feeding on the dead sponge or the shmutz that is getting stuck to it. [16:12:21] Ophiuroids are Ophioplinthaca [16:12:24] tabithapearman leaves the room [16:13:04] Is there a pink soft coral to the right of the squat lobster? [16:13:27] Good morning everyone!! What a different Bioscope today!! [16:13:41] Maybe about 40 cm? Directly to 3 o'clock [16:14:08] Deep sea wood is GREAT STUFF [16:14:12] have you collected the funny fans already? [16:14:14] small starfishes and ophs live there [16:14:29] special habitats [16:14:30] annaklompen leaves the room [16:14:33] must be small gastropods there! [16:14:40] Got fan, yes. Tretopleura? [16:15:20] Laminar bottom currents can entrain and transport lots of organic particulates. However, the very rough, rocky, uneven substrate physiography here would also be conducive to generation of lots of local eddies. Eddies break up and slow-down laminar currents and recirculate particulates and that process would probably facilitate the feeding of the field of glass sponges [16:15:26] Okay!! FAN_TASTIC!!! nice punch Allen [16:15:47] Too bad Scott isn't here to appreciate the puns [16:16:29] tabithapearman leaves the room [16:16:46] emilycrum leaves the room [16:17:00] LAT : 30.191462 , LON : -76.163641 , DEPTH : 3646.9502 m, TEMP : 2.33292 C, SAL : 34.89753 PSU, DO : 8.20194 mg/l, TURBIDITY : 0.8974 FTU [16:17:29] carolynruppel leaves the room [16:17:54] Huh, now we are seeing those same ophiuroids on live sponges. [16:19:23] That white squat lobster looked like Munidopsis. [16:20:32] This dive is pretty deep for galatheid crabs (squat lobsters). Martha Nizinski at NOAA-Smithsonian would probably be happy is a specimen of the short-bodied white squat lobster were to be collected. Potential undescribed [16:21:20] chryso [16:21:24] Bottle brush Chyrsogorgia. Not metallogorgia [16:21:31] Chryso [16:21:44] mariadiaz leaves the room [16:22:00] LAT : 30.191315 , LON : -76.16385 , DEPTH : 3643.6832 m, TEMP : 2.34771 C, SAL : 34.89933 PSU, DO : 8.16633 mg/l, TURBIDITY : 0.8852 FTU [16:22:18] @Nolan, baby-Metallogorgia may be tricky to tell apart [16:22:36] @Tina Oh okay [16:22:37] The polyps of this coral are being blown towards the left by some steady current. [16:23:36] no, we all for Chryso!)) [16:23:41] Roger - yes indeed. The stiff-bodied glass sponge fans give the illusion of nil bottom current, The waving branches of the Metalogorgia say otherwise [16:24:38] no but this is chrysogorgia [16:25:28] Are these gorgonians targets for sampling? Community? [16:25:32] Despite the fact the spicules fracture easily in the cross-sectional direction, they are pretty resistant. Basically like fiberglass. [16:26:02] we have seen Metallogorgia yesterday's dive but not today. [16:26:29] Asako - thanks for tax correction. [16:26:52] Reminds me of the hemispheres of a brain [16:27:01] LAT : 30.191258 , LON : -76.16402 , DEPTH : 3632.072 m, TEMP : 2.34919 C, SAL : 34.89857 PSU, DO : 8.2376 mg/l, TURBIDITY : 0.8974 FTU [16:27:16] Oh wow! Calling all geologists! [16:27:36] Big slap fractured off the wall- awesome [16:28:07] so likely blocks of jointed limestone breaking off the top of the escarpment and tumbling down...no slope failure really necessary... [16:28:54] stephaniefarrington leaves the room [16:28:57] this is what the Land paper referred to in terms of lateral migration of the escarpment....the escarpment "migrates" back towards the plateau [16:29:40] slope failure would be more like a slide failure (submarine landslide) [16:30:03] Rock samples helpful? If we see something small @Carolyn [16:31:51] is the current from from right side? (I don't know [16:31:54] i'm the wrong person to ask on that...you'd need someone into deepwater carbonates...i'm a geophysicist and my interest is more authigenic carbonates [16:32:01] i was referring to "rock samples" [16:32:02] LAT : 30.191231 , LON : -76.164129 , DEPTH : 3630.7598 m, TEMP : 2.37524 C, SAL : 34.90079 PSU, DO : 8.18877 mg/l, TURBIDITY : 0.9035 FTU [16:32:17] Got it @Carolyn [16:33:19] Theseclose by fans look different [16:33:23] Now you can see the sponges kind of moving in the currents [16:33:36] Ophioplinthaca has those triangular "wedges" on the disk [16:33:43] Such rough, hard-rock habitat at depth is rarely fish friendly. There are a few large ophidioids, however, that are rock huggers, like the Bythididae genera Diplacanthopoma and Cataetyx. Depth here is possibly too deep for either. But I would be happy to be proven wrong. Bring on the fishes! [16:33:53] Those tonge ones tan in color look like Phakellia [16:34:15] Definitely hexactinellid, but I can't tell ya more. [16:34:40] can we get a shot of one of the ophiuroids if one is layed out? [16:34:54] @Maria I was thinking Tretopleura. What do you think? [16:35:06] The Kraken has eaten all of the fishes. [16:37:02] LAT : 30.191256 , LON : -76.16414 , DEPTH : 3624.9822 m, TEMP : 2.36319 C, SAL : 34.89964 PSU, DO : 8.12974 mg/l, TURBIDITY : 0.8913 FTU [16:37:22] Hi Allen- can you ask for Camera 3 to show the standard info and MB [16:37:40] Generally, there is a great deficiency here of mobile megafauna (excluding brittle stars perched upon sessile inverts). I have yet to see even one midwater fish, squid, or shrimpopod.Thus, a lack of food for predatory fishes. Also, the lack of soft substrate means a shortage of soft-substrate inhabiting benthic inverts - another primary food of many deep bottom fishes. [16:38:44] Cristina- are those stalked fans Phakellia? The surface looks too smooth. [16:39:24] it is said that sponges and corals make habitats for other organinsm including fish, but Ken says that hard-rock habitat is rarely fish friendly. why. [16:40:09] thanks @Allen! [16:40:46] request made @JohnR [16:41:24] mariadiaz leaves the room [16:41:33] I think Cris said Phakellia for one sponge that shows up in between the fans [16:42:03] LAT : 30.191161 , LON : -76.164413 , DEPTH : 3624.7573 m, TEMP : 2.35846 C, SAL : 34.89903 PSU, DO : 8.17592 mg/l, TURBIDITY : 0.8913 FTU [16:42:14] there is forked bamboo at the background [16:42:17] Could that be Hyalonema? [16:42:27] The stalk is slightly elingated and thin [16:42:42] emilycrum leaves the room [16:42:59] sux arms! [16:43:08] six [16:43:16] 6 arms indeed [16:44:01] For the stalked sponge I am leaning more towards Amphidiscella which is a Euplectellid. [16:44:24] classic Ophioplinthaca [16:44:33] the other one was weird thoguh [16:44:38] What a beauty ophi!! [16:45:08] we need to see if there is a sieve-plate on the top, Cris. But it looks like Saccocalyx, by the way we have the peduncle attached on the body [16:45:27] I am stumped on the amorphous sponge [16:45:39] same here [16:45:44] GO TEAM!! [16:46:35] sorry, have to leave now, how long is the dive today? [16:46:41] I haven't seen Hyalonema with such a skinny stalk. [16:46:59] The stalk looks different to the more common Hyalonema, Nolan knows these more than me. Cool you are getting one!!! [16:47:04] LAT : 30.191203 , LON : -76.164347 , DEPTH : 3625.2211 m, TEMP : 2.36415 C, SAL : 34.89644 PSU, DO : 8.22158 mg/l, TURBIDITY : 0.8974 FTU [16:47:11] carolynruppel leaves the room [16:47:33] Hyalonmea is usually growing on the sand, I believe!!! [16:47:40] any possiblity of Euplectellidae, Amphidiscella for the sponge id as Hyaloneam? [16:47:55] *Hyalonema [16:47:58] It is possible [16:48:01] The stalked Euplectellidae don't have an apparent sieve plate though. [16:48:46] There are ton of tonged shaped fans that are definitively diferent. I believe a Phakellia sp [16:48:54] Yes, please zoom on the smaller stalked sponge behind the one we want to collect. [16:49:42] Cladorgyzidae [16:49:50] For the big one, I am sticking with Amphidiscella. For the small one, reminds me of a Bolosoma, but could be a babyof the big one. [16:49:55] cladorhizida [16:50:03] Somebody must like to eat the top of this "Hyalonema " sponge. It is so cool!! [16:50:07] Cladorgyzidae, which one? @Tina. And welcome! [16:50:24] NO steph I think they are Phakellia species [16:50:40] They are alive and very conserved in shape and size [16:50:45] I think Asbestopluma, because it is Featherlike - at the base of glass sponges [16:50:47] stephaniefarrington leaves the room [16:50:59] Hi Allen [16:51:24] It was visible when we zoomed up [16:51:35] Exactly because of her observation they have a consistent shape, and size and color [16:52:04] LAT : 30.19119 , LON : -76.164323 , DEPTH : 3625.5506 m, TEMP : 2.36148 C, SAL : 34.90019 PSU, DO : 8.18391 mg/l, TURBIDITY : 0.9646 FTU [16:52:12] I rewound the footage, @Tina I think there are Cladorhizids too. [16:52:26] annaklompen leaves the room [16:54:12] Thank you ROV team! Great job as usual! [16:54:46] carolynruppel leaves the room: Replaced by new connection [16:54:54] allencollins leaves the room [16:55:33] tinamolodtsova leaves the room [16:57:05] LAT : 30.191207 , LON : -76.164498 , DEPTH : 3626.6859 m, TEMP : 2.37041 C, SAL : 34.89697 PSU, DO : 8.20338 mg/l, TURBIDITY : 0.8913 FTU [16:57:08] I'm back... [16:57:30] welcome back Scott! [16:57:57] johnreed leaves the room [16:58:11] Welcome back. One more sponge in teh bucket Scott. Bamboo corals here and there. . . [16:58:25] mariadiaz leaves the room [16:59:52] stephaniefarrington leaves the room [17:00:47] christophermah leaves the room [17:00:50] This is definitively a unique type of sponge aggregation! [17:01:10] That round sponge is a type of Hyalonema [17:01:13] What is this one holed one [17:01:17] *unstalked [17:01:19] honestly, i don't think there are many around who work on these kinds of deep carbonates...I wouldn't spend time on a geology sample [17:01:34] Other Hexactinellid [17:01:38] With some encrusting in the back [17:01:40] moving up the escarpment is the best thing you can do from a geological standpoint IMHO [17:01:52] Yorkshire pudding sponge [17:01:57] @Carolyn: thanks for the input [17:02:06] LAT : 30.191197 , LON : -76.164267 , DEPTH : 3624.4001 m, TEMP : 2.34982 C, SAL : 34.89947 PSU, DO : 8.13405 mg/l, TURBIDITY : 0.8913 FTU [17:02:28] @Ken: mmm. Now I want to rush home and make yorkshire pudding! [17:02:47] On the left looks like a Rossellid vase. [17:03:14] Scott - I agree that the physiography here - a jumble of fallen rocks - if very different from what we saw in terms of smooth vertical dropoffs in the Bahamas. [17:03:26] For the amorphous sponge, I think I have an idea [17:03:33] primnoid [17:03:50] Cladorhizid sponge! [17:03:52] That is a beutiful tiny community [17:03:56] Cladorhizid sponge [17:04:07] Form known on that clado? [17:04:12] Cladorhizid [17:04:16] Yes, we have seen this before. [17:04:18] Never seen before. this is incredible [17:04:40] Thanks Nolan [17:04:55] I don't think Vasella, but definitely in the same family of Rossellidae [17:05:03] rogerflood leaves the room [17:05:32] heatherjudkins leaves the room [17:07:06] LAT : 30.191144 , LON : -76.164468 , DEPTH : 3624.6168 m, TEMP : 2.34663 C, SAL : 34.89735 PSU, DO : 8.20427 mg/l, TURBIDITY : 0.8974 FTU [17:07:10] Thanks for the collection! [17:07:24] Got to sign off. If the dive proceeds to encounter an ecotone between the rock wall and open soft sediment - some bottom fishes may be encountered. [17:07:26] I am going to stick with Hexactinellid... [17:07:48] The 3 oclock that Steph mentioned before looked a lot like Vazella pourtalesii [17:07:53] Ooo please zoom on the Farreidae??? when ready please! [17:08:02] kensulak leaves the room [17:08:18] One the cladorhizid, it looks quite similar to Abyssocladia known from abyssal depths off Bermuda in Hestetun, J. T., Pomponi, S. A., & Rapp, H. T. (2016). The cladorhizid fauna (Porifera, Poecilosclerida) of the Caribbean and adjacent waters. Zootaxa, 4175(6), 521-538. [17:09:03] We are so lucky!!! [17:09:33] I love sponges! Not a traditional invert biologist, but I love them because they (and their microbiomes) produce lots of cool chemistry! [17:09:36] YES!! good call Steven!!!! [17:10:05] Kind of a loner!!! [17:10:31] Thank you! [17:11:19] If you get a chance to get the tonge Phakellia, that is an undescribed 100% [17:11:41] @Christina We collected one at the beginning of the dive. Nice big piece. [17:11:46] We got something very similar from Pulley ridge, much shallower of course [17:12:06] LAT : 30.191021 , LON : -76.164434 , DEPTH : 3623.1828 m, TEMP : 2.34003 C, SAL : 34.89856 PSU, DO : 8.17631 mg/l, TURBIDITY : 0.8974 FTU [17:12:18] @Nolan, neat!!!! [17:12:36] Yes indeed! [17:14:20] Looks like claw on arm will not close. Continuing with video. Unable to use suction sampler as well, because that relies on claw [17:14:26] For the sponge that we just zoomed on, I am leaning towards Farreidae but I cannot rule out Heterorete. Too far away. Either way, a neat sponge. [17:14:50] stephaniefarrington leaves the room [17:14:55] AaronMicallef leaves the room [17:15:12] @Allen Thanks for the update on the claw [17:15:35] :( [17:17:06] LAT : 30.191024 , LON : -76.164506 , DEPTH : 3626.4444 m, TEMP : 2.3546 C, SAL : 34.89884 PSU, DO : 8.10154 mg/l, TURBIDITY : 0.8913 FTU [17:17:52] Round one looks like Rossellid [17:17:57] The round spiky might be Vazella [17:20:07] @Scott THAT IS SO NEAT! Can you please share the paper if you can? [17:20:51] Sponges have been around for a long time!!! And create their own leaps withtheir partners the MICROBES [17:20:52] @Nolan: I'll try to find it. Hopefully I put the citation in my class lecture notes. [17:21:18] Sponge on sponge and then a yellow Cladorhizid? [17:21:21] Picnogonid over the tonge shaped Phakellia [17:21:49] @Scott Please and thank you! [17:22:06] LAT : 30.190935 , LON : -76.164576 , DEPTH : 3624.3431 m, TEMP : 2.43089 C, SAL : 34.90321 PSU, DO : 8.2343 mg/l, TURBIDITY : 0.9035 FTU [17:22:45] So @mariadiaz, you think the white fans are Phackellia? [17:25:14] The tan or grayish "tonged shaped" is the one I believe is Phakellia [17:25:17] @Allen Can yall do any basic spicule prep on board? Maybe take a tiny tiny section of this tongue shaped sponge and expose it to bleach? If its a Phakellia demosponge, it would leave a lot less behind then a Tretopleura hexactinellid. [17:25:45] @Christina I think those gray ones are just the dead big white ones. [17:25:51] Definitely Cladorhizid [17:27:07] LAT : 30.191001 , LON : -76.164679 , DEPTH : 3625.69 m, TEMP : 2.40515 C, SAL : 34.90134 PSU, DO : 8.11747 mg/l, TURBIDITY : 0.989 FTU [17:27:29] The small round white balls with one large oscule, might be a Leucopsacus species. Something very similar is described from Brazil sea Mounds. Carvalho et al. 2017 [17:28:17] Definitively Sponges are moving energy, nutrients and water in this area!!! [17:29:54] Are you having difficulty hearing me? Is my speaker phone wonky today? [17:30:21] @Scott No problem for me. Maybe a little faint? [17:30:32] @Nolan: thanks. [17:30:47] christophermah leaves the room [17:31:33] Mollusc on the rock behind the seapen? [17:31:37] Maybe chiton?? [17:32:07] LAT : 30.190939 , LON : -76.164689 , DEPTH : 3623.6039 m, TEMP : 2.39355 C, SAL : 34.90095 PSU, DO : 8.08899 mg/l, TURBIDITY : 0.8913 FTU [17:32:53] @Scott -- "A little wonky" is a good description for your audio when it gets to my living room. Somewhat faint and somewhat fuzzy. [17:33:33] but still understandable. [17:34:16] mariadiaz leaves the room [17:34:38] Demosponge behind the coral [17:34:51] Geodiids are recorded from this depth. [17:35:08] georgematsumoto leaves the room [17:36:22] @Mike:the speakerphone is very sensitive to the angle of one's head! I have to be pointing at it just right, and then I can't see the csreen! [17:36:27] Beautiful anemone and a cladorhizid underneath [17:36:48] Oh and a Geodiid demosponge behind clado [17:37:08] LAT : 30.190923 , LON : -76.164655 , DEPTH : 3621.4219 m, TEMP : 2.39793 C, SAL : 34.9012 PSU, DO : 8.24729 mg/l, TURBIDITY : 0.873 FTU [17:39:08] allencollins leaves the room [17:42:09] LAT : 30.190945 , LON : -76.164741 , DEPTH : 3619.4881 m, TEMP : 2.39656 C, SAL : 34.90132 PSU, DO : 8.21447 mg/l, TURBIDITY : 0.8852 FTU [17:42:12] Hydrodendron was the name I was trying to recall [17:44:31] So is that a Stolonifera? [17:44:54] @John: not a stolonifera in the sense of an octocoral. [17:45:29] @John: that is, it is not an octocoral, and so not a Stolonifera. But it has stoloniferous growth, e.g. mat or ribbon-like growth [17:45:36] Yes, I just mentioned the stoloniferous matt. YEs. [17:45:43] brisingid [17:46:11] Not a chiton, a scale worm [17:46:20] callimng [17:47:10] LAT : 30.190894 , LON : -76.16481 , DEPTH : 3618.0755 m, TEMP : 2.4131 C, SAL : 34.89695 PSU, DO : 8.23275 mg/l, TURBIDITY : 0.8852 FTU [17:51:12] @ChrisM You said Freyella sp, right? [17:51:43] Freyella [17:52:10] LAT : 30.190803 , LON : -76.164594 , DEPTH : 3612.6518 m, TEMP : 2.3956 C, SAL : 34.90108 PSU, DO : 8.08747 mg/l, TURBIDITY : 0.8974 FTU [17:52:13] I could not quickly find the genus for that primnoid candelabrum, but lets go with Calyptrophora for now. [17:52:22] Someone needs to mute themselves! [17:52:42] Whoever just called in needs to go on mute. [17:52:46] Someone need to mute? [17:53:40] Snail behind crinoid [17:53:43] stevenauscavitch leaves the room [17:56:52] stephaniefarrington leaves the room [17:57:10] LAT : 30.190847 , LON : -76.16488 , DEPTH : 3613.6358 m, TEMP : 2.38951 C, SAL : 34.89992 PSU, DO : 8.16933 mg/l, TURBIDITY : 0.8913 FTU [17:58:01] Looking at the waving polyps and the flat sponges in the same view, it looks like the flat sponges are tipped into the current with the cupped side toward the current? [17:58:23] Complex pattern of branching in that bamboo coral [18:00:10] Wondering if that hydroid could have been Rosalinda. Something I have never seen. [18:00:59] Check that. Not Rosalinda. [18:02:11] LAT : 30.19073 , LON : -76.165011 , DEPTH : 3610.9335 m, TEMP : 2.39855 C, SAL : 34.90155 PSU, DO : 8.08317 mg/l, TURBIDITY : 0.8852 FTU [18:02:23] sITTING on a pteropod [18:02:50] D2's cameras are just unreal! So cool! [18:02:53] Based on my interpretation of the nav screen on camera 3 it looks like we've spent the day on the base of the alcove in the wall, and so never actually reached the wall proper. It has been a great dive, but I still wish we could visit the vertical wall on this scarp [another day]. [18:03:00] no I guess not [18:03:53] I did not realize seastars preyed on each other. [18:04:16] First time I've seen it "down here" as well. [18:05:42] @Scott Remember that time when we saw an ophiuroid capture a squid? So cool! [18:05:47] I agree with Chris' comment that the greatest value of the OkEx video is the ecological and behavioral observations we get that have never been made before. [18:06:01] @Nola: how could I forget! [18:06:01] christophermah leaves the room [18:06:30] We have stunned Allen! [18:06:46] I have never seen a hexactinellid pigmented anything other then yellow...This is soooo coool [18:06:50] why it has coloured!! [18:07:11] LAT : 30.190731 , LON : -76.164986 , DEPTH : 3610.3525 m, TEMP : 2.35443 C, SAL : 34.89786 PSU, DO : 8.1811 mg/l, TURBIDITY : 0.8974 FTU [18:07:16] I did typo. too much exciting [18:07:26] @Allen I think I agree with you. I am leaning towards demo [18:08:50] At first the spicule structure looked like Atlantisella, a hexact. But then we panned over to the miniature oscula and I doubt its a hexact. [18:09:43] Yeah, that second zoom on the oscules made me doubt the initial hexcitement I had. [18:10:27] @Allen My new favorite word is "Hexcitement!" [18:10:39] For those who need the starfish names... the multi-armed starfish was a member of the Solasteridae, prey was Pterasteridae.. definitely feeding being observed! [18:10:40] We have a Hertwigia with the same color @NMNH collection but this one looks too different [18:12:11] LAT : 30.19054 , LON : -76.164973 , DEPTH : 3603.8259 m, TEMP : 2.34493 C, SAL : 34.89826 PSU, DO : 8.09118 mg/l, TURBIDITY : 0.8974 FTU [18:12:40] @Christina Do you happen to know if that Hertwigia is stored in ethanol or isopropanol or something else? [18:13:14] After that great zoom, I am still leaning Tretopleua [18:13:51] ethanol, Nolan. :) [18:13:59] rogerflood leaves the room [18:14:50] @Christina Has the color leached at all? Im curious about the nature of the compounds responsible for the color? [18:15:04] I did not know that red hexacts existed! There seemed to be a fibrous look to the sponge we imaged, so that was feeling more demo-ish [18:16:55] The yellow color that is common to the hexacts originates from a compound called uranidine. If this get exposed to lots of oxygen or an oxygenated solvent, it polymerizes and turns black. [18:17:11] LAT : 30.19059 , LON : -76.165087 , DEPTH : 3604.247 m, TEMP : 2.36802 C, SAL : 34.9 PSU, DO : 8.17878 mg/l, TURBIDITY : 0.8974 FTU [18:17:47] stephaniefarrington leaves the room [18:18:23] @Nolan: I wonder if that is the same compound as in some of the yellow plexaurids which have the same reaction (to black) [18:18:59] what are the small white polyp like organisms near the base of the bamboo coral? [18:19:23] jasonchaytor leaves the room [18:20:56] scottfrance leaves the room: Replaced by new connection [18:22:02] abyssal plain [18:22:12] LAT : 30.190537 , LON : -76.165082 , DEPTH : 3600.3145 m, TEMP : 2.39156 C, SAL : 34.90139 PSU, DO : 8.03262 mg/l, TURBIDITY : 0.8852 FTU [18:22:22] @Scott Maybe. I remember that happening to Meagan Putts and I when we put one into ethanol. Uranidine was originally isolated from a shallow water sponge Verongida aerophoba in the 60's or 70's. Nobody has looked at it since so we don't know if its produced by microbes or the host. If it was microbially produced, I could definitely see it being present in the Plexaurids. [18:22:26] The ethanol is pinkish and the specimen is white/transparent. With the yellow one, the ethanol is transparent, which is quite interesting! [18:23:45] @Christina Hmm...that is really interesting. I think the pink could be flavanoids where are very common in plants and only somewhat common in bacteria. As for the yellow, uranidine isn't very soluble in much. But I am surprised it hasn't changed color. [18:24:00] I want to study the chemistry so bad! [18:24:05] cindyvandover leaves the room [18:24:55] allencollins leaves the room [18:25:03] Talk to you in 6 minutes. [18:25:17] Yes Nolan you will. Thanks guys for this incredible trip. @Steph I loved your comparison with the Grand Canyon. Sorry I could not be today had several ZOOMS. [18:25:27] Thank you all for the great dive and collections! [18:25:32] Tomorrow I will join earlier [18:25:45] thanks Allen and Stefanie! [18:25:49] That's so cool! Please, do it! [18:26:13] mariadiaz leaves the room [18:26:24] johnreed leaves the room [18:26:35] carolynruppel leaves the room [18:26:43] upasanaganguly leaves the room [18:26:46] it was really great exciting dive!! Thank you everyone! see you tomorrow! [18:27:00] EX2107_DIVE06 ROV Ascending [18:27:02] christophermah leaves the room [18:27:12] LAT : 30.190474 , LON : -76.164946 , DEPTH : 3586.7118 m, TEMP : 2.38434 C, SAL : 34.9007 PSU, DO : 8.14594 mg/l, TURBIDITY : 0.8974 FTU [18:27:21] Indeed! Thanks Allen and Stephanie! [18:27:56] cristianacastellobranco leaves the room [18:28:13] NolanBarrett leaves the room [18:28:30] asakomatsumoto leaves the room [18:30:30] michaelvecchione leaves the room [18:31:07] monetmurphy leaves the room [18:32:13] LAT : 30.190233 , LON : -76.164608 , DEPTH : 3513.0875 m, TEMP : 2.40378 C, SAL : 34.90167 PSU, DO : 8.14003 mg/l, TURBIDITY : 1.0684 FTU [18:33:32] Thanks everyone! [18:35:42] emilycrum leaves the room [18:37:14] LAT : 30.190236 , LON : -76.16474 , DEPTH : 3361.1128 m, TEMP : 2.42788 C, SAL : 34.90394 PSU, DO : 8.19535 mg/l, TURBIDITY : 0.8852 FTU [18:42:14] LAT : 30.190236 , LON : -76.164893 , DEPTH : 3208.5152 m, TEMP : 2.37354 C, SAL : 34.90271 PSU, DO : 8.18433 mg/l, TURBIDITY : 0.9035 FTU [18:47:15] LAT : 30.190159 , LON : -76.165234 , DEPTH : 3072.1736 m, TEMP : 2.55123 C, SAL : 34.91167 PSU, DO : 8.18101 mg/l, TURBIDITY : 0.8791 FTU [18:52:16] LAT : 30.18992 , LON : -76.164849 , DEPTH : 2920.5604 m, TEMP : 2.72304 C, SAL : 34.92096 PSU, DO : 8.19591 mg/l, TURBIDITY : 0.8608 FTU [18:53:45] allencollins leaves the room [18:57:16] LAT : 30.189695 , LON : -76.164455 , DEPTH : 2759.4655 m, TEMP : 2.75092 C, SAL : 34.92344 PSU, DO : 8.27563 mg/l, TURBIDITY : 0.8547 FTU [19:02:17] LAT : 30.189953 , LON : -76.164411 , DEPTH : 2610.0628 m, TEMP : 2.87499 C, SAL : 34.92997 PSU, DO : 8.19727 mg/l, TURBIDITY : 0.8608 FTU [19:05:31] adamskarke leaves the room [19:07:18] LAT : 30.190183 , LON : -76.164476 , DEPTH : 2458.8002 m, TEMP : 2.93386 C, SAL : 34.93278 PSU, DO : 8.25105 mg/l, TURBIDITY : 0.8547 FTU [19:12:19] LAT : 30.190289 , LON : -76.164461 , DEPTH : 2311.1466 m, TEMP : 3.11762 C, SAL : 34.9413 PSU, DO : 8.20471 mg/l, TURBIDITY : 0.8608 FTU [19:17:19] LAT : 30.19031 , LON : -76.164699 , DEPTH : 2160.6681 m, TEMP : 3.29748 C, SAL : 34.94755 PSU, DO : 8.20516 mg/l, TURBIDITY : 0.8669 FTU [19:17:56] georgematsumoto leaves the room [19:22:20]