[00:06:15] Amy Wagner leaves the room [00:24:39] Alexis Weinnig leaves the room [00:28:30] Alexis Weinnig leaves the room [01:21:18] Alexis Weinnig leaves the room [04:16:06] kaseycantwell leaves the room [10:02:20] test [11:51:41] EX1903L2_DIVE17 ROV powered off [12:03:28] Alexis Weinnig leaves the room [12:14:04] EX1903L2_DIVE17 ROV Launch [12:14:51] robertcarney leaves the room [12:18:17] iscwatch2 leaves the room: Replaced by new connection [12:23:11] EX1903L2_DIVE17 ROV on Surface [12:23:55] EX1903L2_DIVE17 ROV Descending [12:25:25] LAT : 38.315829 , LON : -73.43441 , DEPTH : 24.7359 m, TEMP : 22.52202 C, SAL : 35.66355 PSU, DO : 7.38641 mg/l [12:30:26] LAT : 38.315613 , LON : -73.434576 , DEPTH : 69.6045 m, TEMP : 15.14256 C, SAL : 35.79565 PSU, DO : 5.64596 mg/l [12:35:26] LAT : 38.315663 , LON : -73.434373 , DEPTH : 227.084 m, TEMP : 11.01221 C, SAL : 35.39823 PSU, DO : 4.28684 mg/l [12:40:26] LAT : 38.315831 , LON : -73.434105 , DEPTH : 374.4409 m, TEMP : 8.30775 C, SAL : 35.1506 PSU, DO : 4.8836 mg/l [12:45:27] LAT : 38.316096 , LON : -73.433393 , DEPTH : 528.8253 m, TEMP : 5.88968 C, SAL : 35.05401 PSU, DO : 6.78844 mg/l [12:50:27] LAT : 38.316379 , LON : -73.432492 , DEPTH : 685.6596 m, TEMP : 4.87765 C, SAL : 35.00764 PSU, DO : 7.77533 mg/l [12:52:15] Alexis Weinnig leaves the room [12:55:28] LAT : 38.316675 , LON : -73.431584 , DEPTH : 838.1037 m, TEMP : 4.46626 C, SAL : 34.97787 PSU, DO : 8.11176 mg/l [12:56:57] Alexis Weinnig leaves the room [13:00:28] LAT : 38.316885 , LON : -73.430698 , DEPTH : 989.8023 m, TEMP : 4.33977 C, SAL : 34.96957 PSU, DO : 8.17877 mg/l [13:00:44] robertcarney leaves the room [13:05:29] LAT : 38.316972 , LON : -73.429886 , DEPTH : 1145.4887 m, TEMP : 4.09861 C, SAL : 34.95901 PSU, DO : 7.58922 mg/l [13:08:55] lukemccartin leaves the room [13:10:29] LAT : 38.317052 , LON : -73.429375 , DEPTH : 1306.1967 m, TEMP : 3.94932 C, SAL : 34.95537 PSU, DO : 7.74906 mg/l [13:11:58] christarabenold leaves the room [13:12:55] jaylunden leaves the room [13:15:30] LAT : 38.317175 , LON : -73.429225 , DEPTH : 1456.3807 m, TEMP : 3.84699 C, SAL : 34.95191 PSU, DO : 7.85911 mg/l [13:19:28] EX1903L2_DIVE17 ROV on Bottom [13:20:30] LAT : 38.317026 , LON : -73.428745 , DEPTH : 1522.9409 m, TEMP : 3.79367 C, SAL : 34.95042 PSU, DO : 7.93938 mg/l [13:25:31] LAT : 38.317336 , LON : -73.428594 , DEPTH : 1525.2808 m, TEMP : 3.80619 C, SAL : 34.95017 PSU, DO : 7.9969 mg/l [13:28:40] Alexis Weinnig leaves the room [13:30:31] LAT : 38.317354 , LON : -73.428669 , DEPTH : 1527.8326 m, TEMP : 3.80443 C, SAL : 34.94232 PSU, DO : 8.08221 mg/l [13:34:26] johnreed leaves the room [13:35:32] LAT : 38.317555 , LON : -73.428551 , DEPTH : 1530.401 m, TEMP : 3.79158 C, SAL : 34.95001 PSU, DO : 8.14187 mg/l [13:36:31] small black shark = Centroscymnus coelolepis, common in this region and depth; Synaphobranchid eel head flexing and gapping is a response to being blasted by ROV lights [13:38:10] @adriennecopeland Chris said he will come on at some point today and answer that ROV question from yesterday [13:40:32] LAT : 38.317528 , LON : -73.428303 , DEPTH : 1531.7424 m, TEMP : 3.79284 C, SAL : 34.94976 PSU, DO : 8.17458 mg/l [13:40:34] I believe this urchin is in the genus Phormosoma [13:41:12] AKA pancake urchin [13:41:19] @adriennecopeland When we was planning on having him get on yesterday the weather was getting bad so he had to be in the bridge [13:42:56] the juvenile of one deep-living cusk eel, Barathrites, shelters under Phormosoma - good protection against predators. you might see a fish tail protruding from under the urchin [13:43:53] And there is Barathrites right on cue [13:45:33] LAT : 38.317609 , LON : -73.428305 , DEPTH : 1531.8244 m, TEMP : 3.7924 C, SAL : 34.95065 PSU, DO : 8.2103 mg/l [13:45:51] Not as cute as a tropical clownfish, but same strategy - get cozy with something otherwise fearsome [13:46:44] swimming holothuroid in the Scotoanassa/Peniagone group lifestyle similar to Enypniastes [13:50:33] LAT : 38.317898 , LON : -73.42809 , DEPTH : 1532.7315 m, TEMP : 3.79444 C, SAL : 34.95056 PSU, DO : 8.23615 mg/l [13:51:18] 2nd small swimming holothuroid these small transparent animals are really hard to see when on botto, poss one next tp shell frag [13:52:15] and another use extended tentacles and podia like fins [13:55:17] this one has a worm thing too! [13:55:33] LAT : 38.318081 , LON : -73.428136 , DEPTH : 1533.3416 m, TEMP : 3.79395 C, SAL : 34.95025 PSU, DO : 8.26864 mg/l [13:55:38] fishes and other megafauna that hover or drift over the bottom cannot see the bottom in the natural darkness of their habitat - I am still perplexed at how they know how high they are above the substrate - without crashing repeatedly??? [13:55:58] several small transparent holo on bottom around spider [13:56:02] can we zoom on the wormy thing on its leg? [13:56:28] up a bit [13:58:04] holothuoid small rt of nudi...Elpidia? can occur in 100's / m2 [13:59:52] another swim holo passing by [14:00:34] LAT : 38.318135 , LON : -73.427983 , DEPTH : 1533.0987 m, TEMP : 3.79494 C, SAL : 34.95016 PSU, DO : 8.26868 mg/l [14:05:34] LAT : 38.318143 , LON : -73.427763 , DEPTH : 1534.252 m, TEMP : 3.79682 C, SAL : 34.95036 PSU, DO : 8.27918 mg/l [14:06:14] > 10 small holothuroids on bottom around sea pen [14:06:27] if you would plant a benthic lander with an interval camera here, do timelapse imagery, then speed up the playback - those holothurians would look just like a buffalo herd sweeping across the bottom. Just a matter of switching from the human time frame to the holo time frame [14:09:35] Bathysaurus [14:10:14] each closeup so far has shown numerous of the Elpidia-like holothuroids on bottom [14:10:17] A face only a mother could love. [14:10:34] bit of an underbite [14:10:36] LAT : 38.318379 , LON : -73.427806 , DEPTH : 1534.127 m, TEMP : 3.79367 C, SAL : 34.95015 PSU, DO : 8.3045 mg/l [14:10:49] Deep-sea lizardfish - Bathysaurus ferox - with alligator-like jaws [14:11:28] @robertcarney it is pretty remarkable [14:12:25] Stable isotopes have indicated that Bathysaurus is very high in the food web. [14:12:41] classic sit-and-wait ambush predator. often nips off the tails of other large fishes. also eats a lot of midwater fishes that come down near the substrate. has yellow eye lens filter to defeat bioluminescent camo of midwater fishes - making bioluminescent prey vulnerable [14:12:45] 1960's deep camera work this area by Menzies and Rowe showed mounds of small holothuroids several 100 per m2 [14:12:50] Hygrosoma sp. pancake urchins [14:15:35] LAT : 38.318412 , LON : -73.427648 , DEPTH : 1533.254 m, TEMP : 3.79527 C, SAL : 34.94867 PSU, DO : 8.29643 mg/l [14:16:40] Those with larger sacks may be Phormosoma sp., also Echinothuroida (pancakes) [14:16:54] great, thanks! [14:18:17] scottfrance leaves the room [14:18:19] I agree with Cheryl's comment - and thus I misidentified the particular urchin which had the sheltering fish. The urchin was Hygrosome, not Phormosoma [14:19:26] Scotoanass type trapped under urchin escapes [14:19:42] @ken I was hoping we'd see a cusk eel with these urchins! [14:20:11] another Scotoannas type escapes [14:20:19] not many places to hide on this mainly open sedimentary habitat, Thus juvenile fishes are rare - mostly we see large adults. Barathrites cusk eel has found a way to have its juveniles exist here [14:20:36] LAT : 38.31852 , LON : -73.42764 , DEPTH : 1534.5992 m, TEMP : 3.79367 C, SAL : 34.94992 PSU, DO : 8.31575 mg/l [14:25:36] LAT : 38.318617 , LON : -73.427391 , DEPTH : 1534.4124 m, TEMP : 3.79268 C, SAL : 34.95014 PSU, DO : 8.30554 mg/l [14:26:01] 200 meters traveled [14:26:42] ? [14:26:48] Nemertean? [14:26:56] sounds good [14:27:03] two? [14:27:29] small holothuroid behind [14:28:03] circular / doughnut shaved oral? end [14:28:20] assume rt is the anterior [14:29:08] bernardball leaves the room [14:29:38] deep dorid nudibranchs do eat holothuroids...do not know about the one seen here [14:30:37] LAT : 38.318685 , LON : -73.427386 , DEPTH : 1534.1015 m, TEMP : 3.79505 C, SAL : 34.95031 PSU, DO : 8.31467 mg/l [14:32:31] dark, ropy thing was squid ink. [14:33:06] baby Acanella? [14:35:37] LAT : 38.318807 , LON : -73.42729 , DEPTH : 1535.291 m, TEMP : 3.79367 C, SAL : 34.95026 PSU, DO : 8.32172 mg/l [14:40:38] LAT : 38.318916 , LON : -73.427284 , DEPTH : 1535.4726 m, TEMP : -11.93193 C, SAL : 60.40593 PSU, DO : -88.04037 mg/l [14:42:54] ryangasbarro leaves the room [14:45:07] @all - at 11:30 EDT we will have a live interaction that will pull Alexis away from the narration for a bit - please feel free to call in to the telecon line to assist Amy with the live broadcast! [14:45:39] LAT : 38.319052 , LON : -73.427315 , DEPTH : 1535.393 m, TEMP : 3.79759 C, SAL : 34.95073 PSU, DO : 8.29078 mg/l [14:47:29] Please and thank you! :) [14:48:19] It is interesting that there are no red deepsea crabs, Chaceon quinquedens, here. We have wondered what the depth limit is for them. We have captured them from near this location in trawls to ~~800 m, and they were observed at ~~1000 m yesterday on similar bottom type. We also think that the juveniles are mostly below 800-1000 m, since few have been caught shallower than that. Where are they? [14:50:39] LAT : 38.319211 , LON : -73.427122 , DEPTH : 1536.1454 m, TEMP : 3.79781 C, SAL : 34.95097 PSU, DO : 8.28952 mg/l [14:51:04] Earlier submersible dives in the East Coast canyons showed red crabs highly associated with dropoffs, mudstone cliffs, undercuts. They can burrow in the mudstone - share that habit with hake Phycis chesteri. Warren Rathjen NMFS did a lot of work on commercial fishery for red crabs back in the 1970-80s. Might find some good insights from his work [14:52:24] Are the shy worms Echiurans? [14:54:27] bernardball leaves the room [14:54:41] Parapagurus? [14:55:39] LAT : 38.319327 , LON : -73.42705 , DEPTH : 1536.7358 m, TEMP : 3.80062 C, SAL : 34.95091 PSU, DO : 8.29242 mg/l [14:56:00] Parapaguridae at any rate, typically carry anemones or zooanthids on their backs instead of gastropod shells. [14:56:19] John R -- yes. [15:00:26] halosaur [15:00:40] LAT : 38.319465 , LON : -73.426912 , DEPTH : 1536.584 m, TEMP : 3.8068 C, SAL : 34.95088 PSU, DO : 8.3063 mg/l [15:01:48] The ROV missions of Okeanos and Nautilus in recent years have provided great imagery and insights. But, visual exploration began back in the 1960-1980 period using submersibles and drop-cameras. For example, there is a really excellent image of a piglet-like herd of the holo Scotoplanes at 1200 m in Gage and Tyler's 'Deep-Sea Biology' 1991, p 215; and another showing a dense concentration at 1615 m off Cape Hatteras in Heezen and Hollister's 1971 'The Face of the Deep' p 82 [15:03:06] possibly more swimming holothuroids here [15:03:50] Large blue-black halosaur is Halosauropsis macrochir. Often drifts over the substrate. Has a big ventral mouth used to ingest mouthfuls of sediment - from which prey are sorted out [15:04:08] another 100 meters traveled - 300 meters traveled [15:05:01] Note the Scotoplanes herd "off Hatteras" was actually a Nanvy image from off San Diego! [15:05:03] This large halosaur has had the tip of its tail nipped off - evidence of Bathysaurus at work [15:05:40] LAT : 38.319593 , LON : -73.426964 , DEPTH : 1537.2474 m, TEMP : 3.80934 C, SAL : 34.95085 PSU, DO : 8.30507 mg/l [15:06:28] Yep Bob - the first image was indeed from the Navy's Trieste submersible; the second image was from off Hatteras. Two different genera - similar behavior [15:06:29] @ken, I think I read that they can regenerate lost portions of their tails — do you know if this is true? [15:08:10] No, when the tail is nipped off, the wound heals and new rays of the anal fin move into position to act like a caudal fin. No actual regeneration, simply healing and doing the best with what remains [15:08:11] @ Ken I don't think Scotoplanes (sea pig) has been convincingly identifed from N Atlantic, but is common in S Atlantic around Antarctic [15:09:37] thanks for the clarification, ken. [15:10:02] H & H wisely deferred from providing an ID of the Hatteras herd. [15:10:41] LAT : 38.319794 , LON : -73.426927 , DEPTH : 1537.8533 m, TEMP : 3.80884 C, SAL : 34.95108 PSU, DO : 8.30957 mg/l [15:12:29] Bob - do you have a genus name for the common translucent species from today's dive? [15:15:41] LAT : 38.319939 , LON : -73.426894 , DEPTH : 1535.4066 m, TEMP : 3.81061 C, SAL : 34.95073 PSU, DO : 8.30574 mg/l [15:17:21] Muusoctopus (formerly Benthoctopus) johnsonianus. New I think for this cruise leg. [15:18:37] 2nd octopod -- Graneledone verrucosa [15:19:02] Big picnogonid is so cool! [15:19:30] They are so cool!! We have seen so many tody! [15:20:05] Biggest pycnogonid I've ever seen. [15:20:20] looks like the Graneledone is trying to investigate the pycnogonid [15:20:42] LAT : 38.319999 , LON : -73.426895 , DEPTH : 1530.085 m, TEMP : 3.81083 C, SAL : 34.95107 PSU, DO : 8.31516 mg/l [15:20:47] hello - John Reed [15:20:52] @michaelvecchione do they do that out of curiosity? [15:21:18] Amy - might want to eat it [15:22:01] Didn't like touching D2! [15:22:19] Can you blame it? [15:22:53] judging from bottom around octopus and spider we have moved out of area where small holothuroids carpet bottom [15:22:55] Haha, no, not at all! [15:25:42] LAT : 38.320006 , LON : -73.426976 , DEPTH : 1528.026 m, TEMP : 3.80972 C, SAL : 34.95073 PSU, DO : 8.31453 mg/l [15:25:51] Nice close up of the warty octopod to zoom in on the eye. The octopod eye here appears to have an aphakic space surrounding the eyeball. That is an adaptation to take in more light although visual acuity would suffer - aphakic spaces are very common among many deep-sea fishes [15:28:06] Ok Alexis is off for the live interactions- anyone want to join for theiry 15 minutes of fame? [15:28:19] Think that's a mysid not an amphipod [15:30:43] LAT : 38.320043 , LON : -73.42704 , DEPTH : 1521.3734 m, TEMP : 3.81011 C, SAL : 34.9508 PSU, DO : 8.31603 mg/l [15:35:43] LAT : 38.320042 , LON : -73.42711 , DEPTH : 1518.2067 m, TEMP : 3.8084 C, SAL : 34.95134 PSU, DO : 8.32836 mg/l [15:36:28] Alexis Weinnig leaves the room [15:38:03] Hello all [15:39:17] hello! [15:39:30] Hi Asako [15:39:44] Hi Amy, Hi Kasey! [15:40:23] any id on the coral? [15:40:44] LAT : 38.320064 , LON : -73.427115 , DEPTH : 1518.837 m, TEMP : 3.80934 C, SAL : 34.96124 PSU, DO : 8.32101 mg/l [15:40:58] with my first look, it reminds me Acanella as well. but could not see nodes from my view.... [15:42:35] thanks asako [15:43:55] Looks like a leech? [15:44:11] Totally [15:44:53] sipunculid extrovert? [15:45:16] fish leech Piscicolidae (likely) [15:45:44] LAT : 38.320073 , LON : -73.427147 , DEPTH : 1516.2785 m, TEMP : 3.80879 C, SAL : 34.95242 PSU, DO : 8.31812 mg/l [15:46:46] Some such leeches are highly selective for gastropods - either fish or snail as prey, the free exploratory end of the leech actively seeks to latch on [15:47:06] so interesting! [15:48:01] Hygrosoma sp. [15:50:45] LAT : 38.320132 , LON : -73.427148 , DEPTH : 1512.7082 m, TEMP : 3.83674 C, SAL : 34.94258 PSU, DO : 8.31427 mg/l [15:55:45] LAT : 38.320262 , LON : -73.427196 , DEPTH : 1505.6908 m, TEMP : 3.81011 C, SAL : 34.9533 PSU, DO : 8.32252 mg/l [15:57:16] @ 400 m mark at 15:57 [16:00:46] LAT : 38.320378 , LON : -73.427237 , DEPTH : 1497.2051 m, TEMP : 3.81171 C, SAL : 34.95132 PSU, DO : 8.3261 mg/l [16:02:13] meganmcculler leaves the room [16:05:46] LAT : 38.320484 , LON : -73.427321 , DEPTH : 1494.0865 m, TEMP : 3.81 C, SAL : 34.95139 PSU, DO : 8.31794 mg/l [16:06:05] kaseycantwell leaves the room [16:06:39] franktamara leaves the room [16:07:05] tall whip coral a sea pen, too? [16:08:11] My guess would be sea pen on this, but haven't seen this one before [16:08:32] Yep. Sea pen [16:09:16] @scottfrance Alexis just did a live interaction and is now at lunch. You wanna call in for a bit? ;) [16:09:20] agree Sea pen [16:09:35] Polyps arise from slight ridge. [16:09:50] @Amy: sorry - not in position this minute, but will try shortly. [16:10:05] This looks very much like a Distichoptilum! ( The longer one) [16:10:14] okay, no worries! Just pardon any ID mistakes I make! [16:10:20] franktamara leaves the room [16:10:42] Yup - Acanella. [16:10:47] LAT : 38.320486 , LON : -73.42726 , DEPTH : 1494.151 m, TEMP : 3.81187 C, SAL : 34.95304 PSU, DO : 8.32059 mg/l [16:11:17] Skeleton base may be modified as a root-like holdfast. If in soft sediment. [16:12:33] Brisingid [16:12:37] Brisingid asteroid is the anme [16:12:44] *name [16:12:50] Novodinia sp.? [16:12:54] Brisingid sea star? [16:13:20] I was thinking Freyellidae instead of Novodinia [16:13:37] @Amy: This is a [specialized] type of seastar. [16:14:02] @Upasana: what genus of sea pen were we looking at a few minutes ago? [16:15:31] stalks from bamboo coral? [16:15:47] LAT : 38.320472 , LON : -73.4273 , DEPTH : 1492.5342 m, TEMP : 3.81899 C, SAL : 34.95114 PSU, DO : 8.32009 mg/l [16:16:52] ryangasbarro leaves the room [16:17:28] Several Paramuricea colonies [16:18:07] Giant solitary hydroid in front of octopus [16:18:31] octopod on eggs? [16:18:38] Octopus on eggs. [16:18:57] yes eggs behind Graneledone [16:19:06] warty octopus? [16:19:39] Yes. Will call shortly. Watching right now. [16:20:48] LAT : 38.32053 , LON : -73.427291 , DEPTH : 1487.8767 m, TEMP : 3.82103 C, SAL : 34.95625 PSU, DO : 8.2807 mg/l [16:24:04] michaelvecchione leaves the room [16:25:48] LAT : 38.320531 , LON : -73.427259 , DEPTH : 1487.7143 m, TEMP : 3.92472 C, SAL : 34.87449 PSU, DO : 8.30457 mg/l [16:29:24] scottfrance leaves the room [16:30:49] LAT : 38.32055 , LON : -73.427235 , DEPTH : 1486.2995 m, TEMP : 3.83057 C, SAL : 34.94943 PSU, DO : 8.30999 mg/l [16:34:04] Alexis Weinnig leaves the room [16:35:49] LAT : 38.320544 , LON : -73.427256 , DEPTH : 1483.689 m, TEMP : 3.82185 C, SAL : 34.95182 PSU, DO : 8.31534 mg/l [16:40:50] LAT : 38.32057 , LON : -73.427243 , DEPTH : 1480.458 m, TEMP : 3.82075 C, SAL : 34.95329 PSU, DO : 8.30329 mg/l [16:41:07] another Graneledone but I can't see eggs yet. [16:42:00] @CherylMorrison you think the yellow plexaurids are Paramuricea? [16:42:27] the eggs (if any) would likely be behind the octopod. [16:45:50] LAT : 38.320609 , LON : -73.42713 , DEPTH : 1476.8896 m, TEMP : 3.83437 C, SAL : 34.95183 PSU, DO : 8.30567 mg/l [16:46:18] The home of the warty octopod [16:48:10] eggs plus what looks like egg attachments with the eggs gone. Possibly some have hatched. [16:48:59] It's starting to look like an aggregation. [16:50:50] LAT : 38.320584 , LON : -73.427311 , DEPTH : 1476.3267 m, TEMP : 3.81915 C, SAL : 34.95169 PSU, DO : 8.30721 mg/l [16:53:33] Alexis Weinnig leaves the room [16:55:51] LAT : 38.320724 , LON : -73.427392 , DEPTH : 1475.5793 m, TEMP : 3.8223 C, SAL : 34.95149 PSU, DO : 8.30247 mg/l [17:00:16] kennethsulak leaves the room [17:00:51] LAT : 38.320721 , LON : -73.427378 , DEPTH : 1475.3564 m, TEMP : 3.82136 C, SAL : 34.95183 PSU, DO : 8.30913 mg/l [17:01:21] franktamara leaves the room [17:05:37] A Pennatula sp [17:05:52] LAT : 38.320791 , LON : -73.427267 , DEPTH : 1467.858 m, TEMP : 3.82627 C, SAL : 34.95198 PSU, DO : 8.30535 mg/l [17:10:05] looks like some sipunculids sticking out too [17:10:18] around the base [17:10:23] laurenwalling leaves the room [17:10:52] LAT : 38.320845 , LON : -73.427212 , DEPTH : 1463.8936 m, TEMP : 3.82693 C, SAL : 34.95431 PSU, DO : 8.30656 mg/l [17:15:49] franktamara leaves the room [17:15:53] LAT : 38.320842 , LON : -73.427182 , DEPTH : 1459.2535 m, TEMP : 3.83426 C, SAL : 34.95209 PSU, DO : 8.28573 mg/l [17:17:19] iscwatch2 leaves the room [17:19:19] franktamara leaves the room [17:19:54] Alexis Weinnig leaves the room [17:20:41] Do you have a species on the Nezumia? [17:20:53] LAT : 38.320937 , LON : -73.427277 , DEPTH : 1456.3288 m, TEMP : 3.83465 C, SAL : 34.95192 PSU, DO : 8.30353 mg/l [17:21:28] maybe caves are prime real estate. [17:22:55] missing arm tips? [17:23:12] I diidn't see eggs. [17:25:33] eggs with this one and possible arm damage [17:25:37] Looks like hexactinellid sponges in the cave too. [17:25:54] LAT : 38.320978 , LON : -73.427296 , DEPTH : 1455.7959 m, TEMP : 3.98332 C, SAL : 34.83086 PSU, DO : 8.27604 mg/l [17:27:11] if any of the burrow-like pieces of the rock are displaced from the wall and easy to grab, it would be great to get some to compare to those that we have from some other places...still trying to figure out the exact origin of them [17:27:14] octopus grottos! [17:29:50] Hey all, I'm at the NC Museum of Natural Sciences! Would Amy or Alexis be willing to say hi to everyone watching in the theater? [17:30:44] yay, thank you! [17:30:54] LAT : 38.321014 , LON : -73.427324 , DEPTH : 1454.8 m, TEMP : 3.83812 C, SAL : 34.95252 PSU, DO : 8.30658 mg/l [17:31:15] I like that word: eggregation = brooding aggregation [17:35:55] LAT : 38.321044 , LON : -73.427318 , DEPTH : 1453.9063 m, TEMP : 3.84066 C, SAL : 34.95243 PSU, DO : 8.29088 mg/l [17:36:23] It ispossible that one like this has just taken up residence in the cave but not laid all of its eggs yet. [17:37:33] "burrows", pipe-like structures from rock face may have been actual burrows or could be fluid conducts [17:37:43] conduits [17:38:00] It also seems possible that ther reason we have seen egg holdfasts in addition to eggs is that after one set hatches another female moves in and lays another batch of eggs. [17:38:23] You might expect that if the caves are prime real estate. [17:38:36] yes, that seems like a very plausible explanation. [17:40:42] chimney-like pipe lower left of octopus closeup [17:40:55] LAT : 38.321056 , LON : -73.427346 , DEPTH : 1451.2255 m, TEMP : 3.84021 C, SAL : 34.953 PSU, DO : 8.30653 mg/l [17:41:09] That looks like a Euphrosinid polychaete in the tube [17:41:18] (pink on the right) [17:41:25] tube is fossil [17:42:26] that pile of sediment under the octopus looks like polychaete poop [17:42:48] we saw fossil tubes like this on previous dives in NE canyons [17:45:46] When you see the octopod funnel pointed toward the ROV it is an indico ation that the oct is irritated by the sub and trying to blow it away with water. [17:45:53] eggs in video [17:45:57] LAT : 38.321088 , LON : -73.427312 , DEPTH : 1452.4505 m, TEMP : 3.84683 C, SAL : 34.95053 PSU, DO : 8.29599 mg/l [17:50:31] can you check the other for eggs? [17:50:56] LAT : 38.32103 , LON : -73.427201 , DEPTH : 1447.8057 m, TEMP : 3.84209 C, SAL : 34.95197 PSU, DO : 8.29763 mg/l [17:55:57] LAT : 38.321066 , LON : -73.427277 , DEPTH : 1443.6637 m, TEMP : 3.84132 C, SAL : 34.95187 PSU, DO : 8.30085 mg/l [17:57:09] another 100 meters - 500 meters traveled [17:58:03] probosis looks a bit purple on tip [17:59:17] Looks like sea pen we saw earlier [17:59:59] ryangasbarro leaves the room [18:00:39] Thats what I thought but the polyps weren't out on this one. [18:00:57] LAT : 38.321113 , LON : -73.427145 , DEPTH : 1440.7215 m, TEMP : 3.88391 C, SAL : 34.95331 PSU, DO : 8.30656 mg/l [18:03:08] meganmcculler leaves the room [18:04:02] adriennecopeland leaves the room [18:05:58] LAT : 38.321207 , LON : -73.427139 , DEPTH : 1439.6527 m, TEMP : 3.84049 C, SAL : 34.95168 PSU, DO : 8.28395 mg/l [18:08:19] jaylunden leaves the room [18:09:27] This dive officially makes the Okeanos Explorer at-sea team ... Octonauts. [18:10:33] swimming holothuroid still in water rt large rock [18:10:58] LAT : 38.321196 , LON : -73.427019 , DEPTH : 1432.2622 m, TEMP : 3.84242 C, SAL : 34.95302 PSU, DO : 8.30398 mg/l [18:11:01] @michaelvecchione YES! :) [18:12:49] Has anyone ID'ed the swimming holothurians? [18:12:53] nice swim holothuroid as seen previously actively thrashing [18:13:43] @ Holo ID...group needs revision name Scotoanassa used previously Peniagone preferred now need specimen in hand [18:14:06] Scotoanassa - swimmer of darkness [18:14:57] On one of the canyon dives in 2014 I recall seeing incredible densities of these Scotoanassa. Trying to find where that was and what depth. [18:15:59] LAT : 38.321322 , LON : -73.427128 , DEPTH : 1429.0047 m, TEMP : 3.84529 C, SAL : 34.95231 PSU, DO : 8.28628 mg/l [18:16:14] The more that you can document with eggs the better. It makes a stronger inference about the ones where the eggs can't be seen. [18:16:41] Tanks Robert! Love that genus name. It reminded me of what I was calling Peniagone from Antarctica. [18:17:31] kaseycantwell leaves the room [18:17:45] See how white she looks? Senescence. [18:18:01] laurenwalling leaves the room [18:18:18] @all apologies for not using all the scientific names - just not sure on pronunciation :-S [18:18:40] @ kevin Peniagone = "spawn of poverty" ....the larger group is pretty complex and benthopelagic group obviously under sampled...pretty fragile jello [18:19:10] nice bit of burrow pipe wall [18:19:46] @robertcarney do you think they would survive a slurp sample if we tried to sample some from the seafloor? [18:20:55] gazillions [18:20:59] LAT : 38.321339 , LON : -73.42706 , DEPTH : 1424.2224 m, TEMP : 3.84495 C, SAL : 34.95237 PSU, DO : 8.27686 mg/l [18:21:12] Re sluping...maybe. Larger ones were successfully sampled off San Diego by Jim Childress in 70's using a multi-ended plankton net on Alvin. [18:21:30] @mike- have you ever seen this many on one dive? [18:22:30] An interesting point here is the difference in posture from the Muusoctopus brooding aggregations recently described from hydrothermal areas off the west coast. [18:22:57] This level of octopus abundance is reminiscent of the canyon dive we called "Octopus Grottoes". It seemed every overhang we came across had an octopus, presumably brooding eggs. [18:23:29] @scottfrance when/where was that? if you remember [18:23:51] @Alexis: just looking those details up. [18:23:58] You can start to see embryonic eye development in the eggs where the female is senescent [18:26:00] LAT : 38.321376 , LON : -73.427099 , DEPTH : 1421.6442 m, TEMP : 3.84352 C, SAL : 34.9531 PSU, DO : 8.25683 mg/l [18:27:21] @Alexis: EX1404-L3 Dive #4 to an unnamed minor canyon to the east of Veatch Canyon. My notes say the grottoes started to appear at about 1395 m depth, though we had seen other octopus earlier in the dive. "...an extensive series of deeply-eroded caves holed out above a more resistant chalk layer, with many caves inhabited by octopi (both Graneledone verucossa and Muusoctopus sp.)" [18:27:34] Veatch Canyon is north of here. [18:27:51] ryangasbarro leaves the room [18:28:53] lots of fossil plumbing [18:28:56] meganmcculler leaves the room [18:30:34] Thanks @scottfrance - CRAZY! [18:30:40] what time of year was that cruise? [18:30:43] Is that a bamboo coral playing King of the Mountain? [18:30:52] @Alexis: September [18:31:00] LAT : 38.321408 , LON : -73.427092 , DEPTH : 1419.9937 m, TEMP : 3.83895 C, SAL : 34.95273 PSU, DO : 8.28475 mg/l [18:31:20] Pardon my distracting from the marvelous octopods.... [18:31:36] That one is a Muusoctopus [18:31:54] If there are 8 octopus clustered on this rock, does that make them an octopod of octopus? [18:32:24] 8X8=64 pods [18:32:56] @Alexis: to be specific, octopus grotto dive was on Sept 23, 2014. [18:36:00] LAT : 38.321392 , LON : -73.426992 , DEPTH : 1418.1435 m, TEMP : 3.83404 C, SAL : 34.95775 PSU, DO : 8.29931 mg/l [18:36:31] In fact, these holos feed on the sediment (deposit feeders), so the swimming is just to change position. [18:36:48] very hard to spot small holothuroids on bottom when there is similar-sized gravel [18:37:09] You can see a photo of the grottoes with octopus here: https://oceanexplorer.noaa.gov/okeanos/explorations/ex1404/dailyupdates/dailyupdates.html#cbpi=sept23.html [18:37:20] It was like octopus condominiums. [18:38:09] numerous foram(trees) on bottom [18:38:29] siouncukid extrovert [18:38:34] sipuncilid [18:39:08] ohhh @scottfrance y'all had a lot of corals at that canyon :) [18:40:17] @Alexis: and we weren't collecting in those days, so it was so hard! [18:41:01] LAT : 38.321423 , LON : -73.426972 , DEPTH : 1416.0206 m, TEMP : 3.82136 C, SAL : 34.95207 PSU, DO : 8.30195 mg/l [18:41:30] FYI, I promised @Amy a couple of hours ago that I would dial in, and I have now. Not that I have anything to say, but around if you want. [18:41:46] great! Chime in when you like :) [18:41:59] we always appreciate the audio help [18:42:13] But you two are doing so well on your own! [18:42:35] multi-concentric layers to walls of fossil burrow/conduits [18:42:40] I'm going to run down the hall and check to see if Upasana has IDed that earlier sea pen. I think I just saw another. [18:43:39] some fossil pipes seem to have 2 holes [18:44:39] expulsion features [18:46:01] LAT : 38.321472 , LON : -73.426964 , DEPTH : 1414.3266 m, TEMP : 3.83928 C, SAL : 34.96297 PSU, DO : 8.2791 mg/l [18:46:05] Again, we don't know much about what happens in the deep, in shallow water there are a few ceph egg predators but not many. [18:47:36] After we image these can we look on the sediment in front of this rock face. I think I saw a sea pen on approach (to right now?) [18:47:48] sure things [18:47:52] thing* [18:47:55] I am keeping my eye out for a Distichoptilum, which has not been collected. [18:48:13] Cyclothone [18:48:16] or we will try - I'll see if the pilots are good with that move [18:48:31] The most abundant vertebrate on earth [18:49:51] upasanaganguly leaves the room: Replaced by new connection [18:51:02] LAT : 38.321458 , LON : -73.427003 , DEPTH : 1413.4799 m, TEMP : 3.83244 C, SAL : 34.95262 PSU, DO : 8.25771 mg/l [18:53:32] laurenwalling leaves the room [18:53:34] upasanaganguly leaves the room: Replaced by new connection [18:56:02] LAT : 38.321446 , LON : -73.426925 , DEPTH : 1410.2886 m, TEMP : 3.81204 C, SAL : 34.95309 PSU, DO : 8.27874 mg/l [18:57:19] Acanella here as well [18:57:25] Couple of small colonies [18:58:09] not seeing any small holo here on mud [18:58:22] yeah same @robertcarney [18:58:26] Actually I think there are at least a half dozen small Acanella colonies here. [18:58:31] franktamara leaves the room [19:01:03] LAT : 38.321515 , LON : -73.426991 , DEPTH : 1407.1447 m, TEMP : 3.81805 C, SAL : 34.95221 PSU, DO : 8.27145 mg/l [19:02:13] Paragorgia arborea? [19:03:02] no, I don't think so [19:03:12] P. johnsoni is at this depth right Santiago? [19:03:17] thanks @santiagoherrera [19:03:22] Or at least we've called it that [19:03:29] Not sure on species. [19:05:33] Cathy McFadden ID'd some from our Alvin cruise as P. johnsoni [19:05:37] it could be P. johnsoni based on depth and location yes [19:05:47] Someone who just called in is not muted. [19:05:57] Or turn down the computer audio. [19:06:03] LAT : 38.321539 , LON : -73.426948 , DEPTH : 1407.2688 m, TEMP : 3.81502 C, SAL : 34.95108 PSU, DO : 8.25798 mg/l [19:06:36] Paragorgia [19:08:14] Acanella... [19:09:00] This is a pretty red Acanella! [19:11:04] LAT : 38.321545 , LON : -73.427012 , DEPTH : 1406.9621 m, TEMP : 3.80917 C, SAL : 34.95206 PSU, DO : 8.28128 mg/l [19:11:05] It would be better if we could collect one. [19:13:33] Alexis Weinnig leaves the room [19:16:04] LAT : 38.321566 , LON : -73.427002 , DEPTH : 1405.4455 m, TEMP : 3.80856 C, SAL : 34.95178 PSU, DO : 8.28001 mg/l [19:19:15] jillbourque leaves the room [19:19:26] Actinerus anemone [19:19:49] [I had to get off the call briefly] [19:21:05] LAT : 38.3216 , LON : -73.426949 , DEPTH : 1402.8003 m, TEMP : 3.8239 C, SAL : 34.95141 PSU, DO : 8.26024 mg/l [19:21:19] laurenwalling leaves the room [19:23:28] smothered! [19:24:14] I count at least 40! [19:24:22] No room at the inn... [19:26:05] LAT : 38.32164 , LON : -73.42694 , DEPTH : 1398.3934 m, TEMP : 3.83007 C, SAL : 34.95236 PSU, DO : 8.27427 mg/l [19:26:56] jasonchaytor leaves the room [19:27:09] I would suggest trying to slide the claw under to clip. [19:27:22] You won't cleanly be able to clip an idividual branch. [19:31:05] LAT : 38.321704 , LON : -73.42692 , DEPTH : 1398.0312 m, TEMP : 3.82356 C, SAL : 34.95132 PSU, DO : 8.29781 mg/l [19:31:42] So nicely done! Buy these guys a... fruit punch at dinner tonight! [19:36:06] LAT : 38.321846 , LON : -73.426683 , DEPTH : 1398.1231 m, TEMP : 3.82456 C, SAL : 34.95229 PSU, DO : 8.29209 mg/l [19:37:25] johnreed leaves the room [19:39:19] Rock star!!!! [19:41:06] LAT : 38.321588 , LON : -73.426626 , DEPTH : 1397.6609 m, TEMP : 3.83801 C, SAL : 34.95007 PSU, DO : 8.30788 mg/l [19:42:47] Donut rock! [19:43:26] "Fossil" burrow fragment? [19:46:07] LAT : 38.321525 , LON : -73.426982 , DEPTH : 1395.4 m, TEMP : 3.83101 C, SAL : 34.95218 PSU, DO : 8.29976 mg/l [19:46:09] EX1903L2_DIVE17 ROV Ascending [19:46:25] lisalevin leaves the room [19:46:43] kelleybrumley leaves the room [19:47:39] kevinkocot leaves the room [19:48:34] Good evening and thanks guys! [19:48:39] scottfrance leaves the room [19:48:40] CherylMorrison leaves the room [19:48:42] laurenwalling leaves the room [19:50:13] robertcarney leaves the room [19:50:15] bradleystevens leaves the room [19:51:07] LAT : 38.321409 , LON : -73.427468 , DEPTH : 1272.3898 m, TEMP : 3.94519 C, SAL : 34.95574 PSU, DO : 8.2986 mg/l [19:51:13] michaelvecchione leaves the room [19:54:31] Amy Wagner leaves the room [19:56:08] LAT : 38.321462 , LON : -73.427475 , DEPTH : 1126.1759 m, TEMP : 4.07818 C, SAL : 34.95822 PSU, DO : 8.28494 mg/l [19:56:46] Alexis Weinnig leaves the room [20:01:08] LAT : 38.321567 , LON : -73.427344 , DEPTH : 975.9154 m, TEMP : 4.28626 C, SAL : 34.96756 PSU, DO : 8.1789 mg/l [20:02:21] santiagoherrera leaves the room [20:03:23] upasanaganguly leaves the room [20:06:08] LAT : 38.321756 , LON : -73.427256 , DEPTH : 828.3646 m, TEMP : 4.45862 C, SAL : 34.97643 PSU, DO : 8.05826 mg/l [20:11:09] LAT : 38.322083 , LON : -73.426281 , DEPTH : 675.8288 m, TEMP : 4.93945 C, SAL : 35.00455 PSU, DO : 7.63914 mg/l [20:16:09] LAT : 38.322475 , LON : -73.425012 , DEPTH : 529.8605 m, TEMP : 6.15622 C, SAL : 35.0651 PSU, DO : 6.53291 mg/l [20:19:31] meganmcculler leaves the room [20:19:35] jimmasterson leaves the room [20:21:10] LAT : 38.322881 , LON : -73.423695 , DEPTH : 377.4068 m, TEMP : 8.38944 C, SAL : 35.14451 PSU, DO : 4.85822 mg/l [20:26:10] LAT : 38.323313 , LON : -73.422347 , DEPTH : 225.646 m, TEMP : 11.6184 C, SAL : 35.46821 PSU, DO : 4.27316 mg/l [20:31:11] LAT : 38.323639 , LON : -73.421565 , DEPTH : 75.2138 m, TEMP : 13.56024 C, SAL : 35.40601 PSU, DO : 6.84172 mg/l [20:36:11] LAT : 38.323946 , LON : -73.421019 , DEPTH : 12.0936 m, TEMP : 22.39464 C, SAL : 35.07205 PSU, DO : 7.46113 mg/l [20:36:26] EX1903L2_DIVE17 ROV on Surface [20:37:55] kaseycantwell leaves the room: Replaced by new connection [20:53:02] EX1903L2_DIVE17 ROV Recovery Complete [22:33:45] Alexis Weinnig leaves the room [22:38:40] kaseycantwell leaves the room [22:48:40] Alexis Weinnig leaves the room [23:00:41] Alexis Weinnig leaves the room [23:15:41] Alexis Weinnig leaves the room [23:44:11] asakomatsumoto leaves the room [23:49:25] Amy Wagner leaves the room [23:57:52] Alexis Weinnig leaves the room [23:58:09] Amy Wagner leaves the room