[00:08:16] EX1907_DIVE01 ROV powered off [00:27:53] stephaniefarrington leaves the room [05:42:33] upasanaganguly leaves the room [10:05:29] chat-admin leaves the room [10:47:19] test [10:52:55] chat-admin leaves the room [11:19:00] EX1907_DIVE01 ROV powered off [11:39:28] EX1907_DIVE02 ROV powered off [12:13:52] EX1907_DIVE02 ROV Launch [12:15:23] kimberlygalvez leaves the room [12:20:48] EX1907_DIVE02 ROV on Surface [12:21:43] EX1907_DIVE02 ROV Descending [12:22:47] LAT : 29.585694 , LON : -79.122953 , DEPTH : 17.8353 m, TEMP : 27.90821 C, SAL : 36.31798 PSU, DO : 6.66032 mg/l [12:27:47] LAT : 29.585458 , LON : -79.121975 , DEPTH : 49.8168 m, TEMP : 27.63155 C, SAL : 36.36264 PSU, DO : 6.70569 mg/l [12:32:48] LAT : 29.585495 , LON : -79.120662 , DEPTH : 186.4036 m, TEMP : 21.3818 C, SAL : 36.79219 PSU, DO : 6.45427 mg/l [12:34:31] kimberlygalvez leaves the room [12:37:48] LAT : 29.585709 , LON : -79.120461 , DEPTH : 329.5595 m, TEMP : 19.02346 C, SAL : 36.61184 PSU, DO : 6.55652 mg/l [12:42:49] LAT : 29.585801 , LON : -79.120403 , DEPTH : 479.178 m, TEMP : 16.65787 C, SAL : 36.27541 PSU, DO : 5.82058 mg/l [12:47:49] LAT : 29.585736 , LON : -79.120461 , DEPTH : 630.2815 m, TEMP : 12.71026 C, SAL : 35.6219 PSU, DO : 4.76972 mg/l [12:48:14] christarabenold leaves the room [12:52:50] LAT : 29.585711 , LON : -79.120489 , DEPTH : 777.5327 m, TEMP : 8.3348 C, SAL : 35.05331 PSU, DO : 4.45746 mg/l [12:55:38] EX1907_DIVE02 ROV on Bottom [12:56:50] Good morning everyone! Let's have a great dive today [12:57:50] LAT : 29.585578 , LON : -79.120372 , DEPTH : 822.3476 m, TEMP : 8.21746 C, SAL : 35.03646 PSU, DO : 4.48095 mg/l [13:02:51] LAT : 29.585649 , LON : -79.120382 , DEPTH : 825.1801 m, TEMP : 8.21715 C, SAL : 35.03647 PSU, DO : 4.46437 mg/l [13:04:04] christarabenold leaves the room [13:07:51] LAT : 29.585646 , LON : -79.120398 , DEPTH : 825.2584 m, TEMP : 8.21602 C, SAL : 35.03655 PSU, DO : 4.45926 mg/l [13:12:52] LAT : 29.585571 , LON : -79.120425 , DEPTH : 825.0713 m, TEMP : 8.22153 C, SAL : 35.03705 PSU, DO : 4.45636 mg/l [13:17:52] LAT : 29.5855 , LON : -79.120463 , DEPTH : 825.3535 m, TEMP : 8.21679 C, SAL : 35.0361 PSU, DO : 4.45471 mg/l [13:20:50] shark Saturday! [13:22:53] LAT : 29.585702 , LON : -79.120694 , DEPTH : 825.2207 m, TEMP : 8.21524 C, SAL : 35.03626 PSU, DO : 4.45355 mg/l [13:27:53] LAT : 29.585751 , LON : -79.120752 , DEPTH : 825.1447 m, TEMP : 8.21798 C, SAL : 35.0371 PSU, DO : 4.45721 mg/l [13:29:22] If pilot suggested what fish may have been, could you please share? [13:31:07] Will do! [13:32:53] LAT : 29.585715 , LON : -79.1208 , DEPTH : 824.025 m, TEMP : 8.21751 C, SAL : 35.03636 PSU, DO : 4.45701 mg/l [13:36:35] Whos on the phone? [13:37:54] LAT : 29.585868 , LON : -79.120906 , DEPTH : 822.2541 m, TEMP : 8.21895 C, SAL : 35.03639 PSU, DO : 4.45765 mg/l [13:42:54] LAT : 29.585847 , LON : -79.120985 , DEPTH : 821.9974 m, TEMP : 8.21916 C, SAL : 35.0363 PSU, DO : 4.44926 mg/l [13:47:55] LAT : 29.585834 , LON : -79.121006 , DEPTH : 820.8052 m, TEMP : 8.22349 C, SAL : 35.03707 PSU, DO : 4.44381 mg/l [13:52:55] LAT : 29.585899 , LON : -79.12113 , DEPTH : 817.0826 m, TEMP : 8.21875 C, SAL : 35.0369 PSU, DO : 4.44465 mg/l [13:53:30] mariadiaz leaves the room [13:54:41] Hello Cristina here at the ECC center. I am working on refreshing the computers, so I am looking it through the public livestream slightly delayed this moment but I am hearing you on the phone [13:55:06] I am maybe 1-2 min delayed right now. as I fix this i will let you know [13:55:40] Okay [13:56:22] If there is anything you'd want a closer look at, let us know and we'll try to get a quick view. Pilots did say they can back track a little [13:57:56] LAT : 29.585985 , LON : -79.121203 , DEPTH : 814.775 m, TEMP : 8.21973 C, SAL : 35.03735 PSU, DO : 4.44256 mg/l [14:02:56] LAT : 29.58602 , LON : -79.121251 , DEPTH : 815.0008 m, TEMP : 8.22045 C, SAL : 35.03761 PSU, DO : 4.44231 mg/l [14:07:57] LAT : 29.585996 , LON : -79.121298 , DEPTH : 811.7435 m, TEMP : 8.22071 C, SAL : 35.03706 PSU, DO : 4.44488 mg/l [14:08:03] The cream tan sponge, conulose thick crust a Dendroceratida (Demospongiae) [14:08:26] few small roundish white blobs, Hexactinellids we saw yesterday also [14:08:59] Slender stalked crinoid with 5 arms is most likely Democrinus. Taxonomy of western Atlantic species not well understood. A specimen would be nice. [14:12:28] Hydroid [14:12:57] LAT : 29.585959 , LON : -79.121413 , DEPTH : 806.9252 m, TEMP : 8.22204 C, SAL : 35.03796 PSU, DO : 4.44663 mg/l [14:13:27] Stalk covered with agglutinating foraminiferans ("fuzzy trees"); also zoanthids. [14:15:26] neat this sponge coukld be an Oceanapia [14:17:58] LAT : 29.585986 , LON : -79.121469 , DEPTH : 804.6435 m, TEMP : 8.22529 C, SAL : 35.03823 PSU, DO : 4.44712 mg/l [14:18:40] Ascothoracid parasite on th black corl [14:18:43] Very cool. [14:18:57] Don't see those often (the clammy looking thing) [14:19:06] Yup [14:19:35] The thick black skeleton is likely modified for a worm tube as you noted. [14:19:42] Stand by on ID. [14:19:51] Can't dial in just now. [14:20:24] Can't recall. Maybe Hexapathes...? Where is Tina when you need her! :-) [14:21:29] FYI, black coral polyps have 6 tentacles (ironically the only Hexacorals with exactly 6 tentacles), but the polyps are often a weird shape so it is hard to see the 6 tentacles are arranged around a single mouth. [14:22:58] LAT : 29.585977 , LON : -79.121511 , DEPTH : 799.8469 m, TEMP : 8.22678 C, SAL : 35.03761 PSU, DO : 4.43763 mg/l [14:23:11] TY~~ [14:24:15] re: last black coral. Hexapthes was a bad guess. Trissopathes is a better guess. [14:24:45] :yes: [14:25:33] I support a collection of this sponge. [14:27:16] :yes: [14:27:59] LAT : 29.585936 , LON : -79.121583 , DEPTH : 799.8219 m, TEMP : 8.2256 C, SAL : 35.03807 PSU, DO : 4.43474 mg/l [14:30:26] slime from the sponge? Will def have to change the ethanol [14:30:31] Excellent, beautiful specimen [14:31:11] Cris, any sepcific guidence on processing this sample? [14:31:34] charlesmessing leaves the room [14:32:59] LAT : 29.585941 , LON : -79.121567 , DEPTH : 798.2629 m, TEMP : 8.22771 C, SAL : 35.03878 PSU, DO : 4.6808 mg/l [14:37:15] Wow! You just saw thta!? haha [14:37:21] First thing I saw. [14:38:00] LAT : 29.585962 , LON : -79.121601 , DEPTH : 797.0916 m, TEMP : 8.24234 C, SAL : 35.04215 PSU, DO : 4.62588 mg/l [14:38:59] A ? from Anthony Narehood on FB: Why do the animals you encounter hold so still most of the time? Is it that they are scared or curious? I would think seeing the sub come down with lights and lasers would be enough to scare anything away. [14:41:28] Good question on FB. My guess would be that energy is precious here in the deep sea where there isn;'t much food. Therefore an animal would want to conserve energy until certain it had to escape. [14:41:56] Those decapods have excellent motion detectors, so I suspect they know the ROV is coming. [14:41:59] Hello all [14:43:00] LAT : 29.585938 , LON : -79.121625 , DEPTH : 795.4355 m, TEMP : 8.22642 C, SAL : 35.03828 PSU, DO : 4.5915 mg/l [14:45:13] Yes, shape of the colony back there suggests Leiopathes [14:48:01] LAT : 29.585984 , LON : -79.121698 , DEPTH : 791.6861 m, TEMP : 8.22447 C, SAL : 35.03844 PSU, DO : 4.56506 mg/l [14:48:05] Nice dive gals and guys! [14:50:41] Didn't hear question - Could you repeat? [14:51:49] Yes, this branching pattern (irregular) is characteristic of Leiopathes. [14:52:33] Eventually (when they are old enough) they all form these bush-like colonies that are narrow near the base and expand from there. [14:52:59] You really need to CUT these branches. [14:53:02] LAT : 29.585996 , LON : -79.121701 , DEPTH : 790.4083 m, TEMP : 8.22987 C, SAL : 35.03926 PSU, DO : 4.543 mg/l [14:53:06] They don't break easily. [14:58:02] LAT : 29.585991 , LON : -79.121705 , DEPTH : 788.9274 m, TEMP : 8.23034 C, SAL : 35.03877 PSU, DO : 4.5244 mg/l [14:59:00] FYI, Leiopathes colonies off Hawaii have been aged at >4000 years old. That was not a typo. [14:59:41] I think these are a form of sweeper tentacle. [15:00:16] What an interesting ackward shape [15:00:28] Basically the colony has been damaged where the hydroid is growing and the adjacent polyps are developing defensive tentacles that are likely heavily studded with stinging cells. [15:03:00] Of course, that interpretation is based on the excellent studies of shallow water corals and anemones. I don't know of any studies of deep-water black corals that demonstrate the formation of sweeper tentacles, but it seems reasonable. [15:03:03] LAT : 29.585957 , LON : -79.121741 , DEPTH : 784.8059 m, TEMP : 8.22416 C, SAL : 35.03849 PSU, DO : 4.50998 mg/l [15:03:13] Whip like black coral to the right. [15:03:45] Stichopathes for the orange whip-like coral... [15:04:30] This is a Paragorgia, but not P. arborea. [15:04:46] I don't think P. arborea gets this far south. [15:05:54] I don't expect you to find P. arborea on this expedition. [15:06:19] not with that attitude [15:06:28] I'd have to check with others to determine what the Paragorgia species in this area are. [15:07:16] Interestingly though P. arborea apparently has a bipolar distribution, so you do find it "south" of here, but all the way down around New Zealand, etc. [15:07:25] More genetic work needs to be done there. [15:08:03] LAT : 29.58599 , LON : -79.121815 , DEPTH : 783.1831 m, TEMP : 8.22627 C, SAL : 35.03923 PSU, DO : 4.49606 mg/l [15:10:36] Acanthogorgia octocoral [15:10:50] The yellow one is Acanthogorgia [15:11:01] The white one to its left is a Primnoidae [15:11:17] Acanthogorgiids do have dark skeletons [15:11:56] The white stick to right of yellow is a Plexauridae octocoral, perhaps Euicella [15:12:17] What beautiful and delicate octocoralls [15:12:23] Sorry - Eunicella [15:12:27] bad typing! [15:13:03] LAT : 29.58601 , LON : -79.121814 , DEPTH : 783.3398 m, TEMP : 8.22627 C, SAL : 35.03915 PSU, DO : 4.47761 mg/l [15:13:11] Lots of octocoral up here! [15:14:21] I think many of the wispy fans you are passing area different kind of bamboo coral. [15:14:37] But you are correct this nice robust one is a bamboo coral [15:15:32] Yes - good eye. Those are pinnules [15:15:40] a caharcteristic of an octocoral polyp [15:15:59] and one of the best ways to distinguish them from a black coral or stony coral [15:16:05] which have smooth tentacles [15:16:32] Octocorals have 8 pinnate tentacles. [15:16:47] Black corals have 6 smooth tentacles [15:17:15] Stony corals have variable numbers of smooth tentacles (in theory in multiples of 6) [15:17:49] Of course, there are many other characteristics that used to make ID at a finer resolution. [15:18:04] LAT : 29.586018 , LON : -79.121988 , DEPTH : 777.8878 m, TEMP : 8.22596 C, SAL : 35.03854 PSU, DO : 4.46982 mg/l [15:18:08] Well said Steph. [15:20:07] Steph, I think what you are trying to describe is that the black coral polyps are not well separated or defined vs the octocoral polyps. [15:21:10] yes [15:21:50] Tanacetipathes is a reasonable guess [15:22:02] You can see the polyps are teeny [15:22:32] Tiny polyps - try to count the 6 little knob tentacles ringing the mouth [15:23:04] LAT : 29.586061 , LON : -79.122053 , DEPTH : 778.0535 m, TEMP : 8.22462 C, SAL : 35.03908 PSU, DO : 4.46193 mg/l [15:24:52] I am loving all this Octocorals and Anthipathidae, and crinoids and sponges etc etc. You gals are shinning today [15:26:33] I am having trouble refreshing the SeaTube v2 connection, it is stock in the dive from yesterday, so I have not been able to annotate. Any suggestion? [15:26:56] @Maria: you may have to log back in. [15:27:22] @Maria: and be sure you have the correct dive code: https://data.oceannetworks.ca/SeaTubeV2?resourceTypeId=1000&resourceId=23621&diveId=2093 [15:27:37] The dive code changes every day. [15:28:05] LAT : 29.586148 , LON : -79.122152 , DEPTH : 772.4021 m, TEMP : 8.22642 C, SAL : 35.03919 PSU, DO : 4.45751 mg/l [15:28:37] Thanks Scott I will use this link [15:29:30] The other two white fans on there are primnoids [15:29:41] Looks like Farrea [15:30:12] Is the yellow the only live part [15:30:32] No, but I see yellow Enallopsammia. [15:30:44] So perhaps this is not Lophelia. [15:31:47] Note: I'm not trying to ID this as Enallopsammia - I'm not very good at scleractinian ID. So instead I am just suggesting it is a different scleractinian from Lophelia. [15:32:13] gorgeous polyps [15:33:05] LAT : 29.586091 , LON : -79.122157 , DEPTH : 772.0122 m, TEMP : 8.23198 C, SAL : 35.03944 PSU, DO : 4.45261 mg/l [15:35:28] @ALL, we are just litle further than halfway up the slope. [15:36:01] how do they build the bounds, their mouths? [15:36:46] This is so neat!!! [15:38:06] LAT : 29.586057 , LON : -79.122166 , DEPTH : 770.2567 m, TEMP : 8.22251 C, SAL : 35.03819 PSU, DO : 4.45556 mg/l [15:38:08] Steph where have you seen these formations before? [15:38:59] Thanks!!! [15:39:14] OOH! [15:39:24] No, a black coral... [15:39:25] Yes PR [15:39:48] Bathypathes, I think. [15:40:44] Could be alternata. We'd need to see it the branches/pinnules arise in an alternating fashion from main axis [15:40:59] or if they arise directly opposite from each other. [15:41:12] e.g. you need a face on view [15:41:19] from front or back [15:41:27] its coming [15:42:07] That looks alternating to me! [15:42:23] Remember: CUT! [15:42:28] Thanks! [15:43:06] LAT : 29.586033 , LON : -79.122275 , DEPTH : 769.7647 m, TEMP : 8.22544 C, SAL : 35.03895 PSU, DO : 4.69656 mg/l [15:43:14] If we are making the effort to collect, I advise trying to cut not just a side pinnule, but the main axis so you have the alternating branches. [15:43:40] It need only be a small piece from the top, but one that includes a few rows of those branches. Does that make sense? [15:44:00] e.g. you are preserving for the voucher that it is a "alternata" [15:44:07] Scott what species would be if it was opposite? [15:44:34] My point is to ask the cutting blade intercept the main central axis [15:44:49] That position looks good. [15:44:59] Beautiful [15:45:14] What a nice cut!!! [15:45:57] @Maria: lots to choose from: http://www.marinespecies.org/aphia.php?p=taxdetails&id=103304 [15:47:09] Steph: I see you used the correct and up-to-date taxonomy - Alternatipathes alternata: http://www.marinespecies.org/aphia.php?p=taxdetails&id=994319 [15:47:12] My bad! [15:48:07] LAT : 29.586046 , LON : -79.12229 , DEPTH : 768.2034 m, TEMP : 8.24831 C, SAL : 35.04163 PSU, DO : 4.64447 mg/l [15:48:20] Hello OE crew. Just aboard for today. Shark seen a few minutes ago = Squalus cubensis, Cuban Dogfish, Family Squalidae [15:48:32] what was the question, can you repeat please? [15:48:34] Hmmm... Tough call Mike. [15:49:11] Looks like an Eknomisis bamboo coral on approach [15:50:19] Sorry, not a cutthroat eel - but a Congrid. All other eels seen today were indeed Synaphobranchus cutthroat eels. [15:51:47] Congrids have high dorsal and anal fins posteriorly, and the fins are translucent. Head rather bluntish. Synaphobranchids have a low dorsal fin over its entire length, and usually a black pigmented tip of the tail [15:53:07] LAT : 29.586077 , LON : -79.122451 , DEPTH : 765.1105 m, TEMP : 8.23101 C, SAL : 35.03974 PSU, DO : 4.61039 mg/l [15:53:30] I would say that today there seems to be more variety on the bottom, while yesterday we encountered mainly the blackened Lophelia rubble, but today we have encountered at least 2-3 different geomorphologically speaking bottoms [15:56:09] Other fishes encountered today so far: First up the gray codlike fish with very long white pelvic fins = Phycis chesteri, Longfinned Hake. It typically rests on the bottom, semi-curled, often within a shallow pit that it digs, or hiding under a ledge; Next the small rattail, family Macrouridae, Nezumia bairdii, in typical oblique posture, nose to the substrate. Next the small black spotted upon white fish sitting on the substrate in typical fashion = the Acropomatidae, Synagrops bella, the Blackmouth Bass. [15:56:30] @Mike: we haven't encountered patches of density and diversity that lend themselves to the beauty shot that easily show a high-density community, but certainly we have been seeing many colonies and pretty good diversity. At this point I feel it is too wishy-washy impression to define and would want to wait until we make some quantification. But it is a pretty good diversity we are seeing. [15:57:14] Did we look at the pikish colony just apssed over? [15:57:25] I think it is a new primnoid for the day. [15:57:47] sorry for my typing: pinkish tall colony just passed over [15:58:07] it was Cristina that made the comment. But is okay. Sponge team from HBOI jeje [15:58:08] LAT : 29.586069 , LON : -79.122565 , DEPTH : 762.2867 m, TEMP : 8.22694 C, SAL : 35.03821 PSU, DO : 4.5744 mg/l [15:58:22] Back to right, back up a bit [15:58:35] From here it is likely straight backward [15:59:55] Now would be to right [16:00:02] and behind you [16:00:32] No, the pinkish one was a flat planar colony well back to the riught [16:00:42] If you encounter more Nezumia, you might see one with a hitchhiking large whitish isopod attached to the dorsal midline, just behind the dorsal fin. It is parasitic and stays attached for life. Isopod = Syscenus infelix [16:02:40] You don't need to go back to it for me - I was just noting it for you. [16:02:54] Note: not this pink Paragorgiid [16:03:08] LAT : 29.586137 , LON : -79.122587 , DEPTH : 761.3478 m, TEMP : 8.32771 C, SAL : 35.05214 PSU, DO : 4.54973 mg/l [16:03:15] It was a tall (1 m or so) flat, multiflabellate colony [16:03:49] okay, we'll keep an eye for it if it comes along agani [16:03:56] *again [16:04:23] At this depth, fishes are still in the dim twilight zone which extends to 1000m in clear oceanic waters. The dim illumination is still useful to visual predators. As a result, many fishes in this twilight adopt disruptive camo, alternating dark and light bands or irregular blackish spotting on a lighter body. Good examples today with Longfinned Hake and Blackmouth Bass. My compliments to the camera person and pilot for obtaining super close-ups of the fishes. Very useful/essential for ID [16:05:00] This is very interesting the density of the octocorals, and associates here. and a higher complexity of the substrate and different sponges from yesterday, more diversity of Demospongiae, while still dominant abundance of the wedding basket Hexactinellid and Farreidae. [16:06:56] hi gang, you all are doing great out there! nice dive so far [16:06:59] FYI, the pinkish colony I was referring to earlier looked something like this: https://www.ncei.noaa.gov/waf/okeanos-animal-guide/PrimnoidaeBranched173.html [16:07:09] Won't be hard to miss if you see it again. [16:07:40] I'm going to have to leave soon. Too many domestic chores demanding my attention. [16:07:56] But now Amanda is here to help! [16:08:07] Wow, nice. THanks, Scott. Will definitely keep an eye out for it [16:08:09] LAT : 29.586183 , LON : -79.122581 , DEPTH : 759.3521 m, TEMP : 8.26056 C, SAL : 35.04639 PSU, DO : 4.52541 mg/l [16:08:11] If the lasers could be turned on for the wide shots, that would be great. i might be missing them on my screen - so apologies if they are on but invisible to me :) [16:08:18] Thanks for all your responses and help Scott [16:08:51] @Mike: I'm starting to lean toward high density coral community! [16:09:28] thanks re lasers- great to keep them on for reviewing the dive later, as long as they don't interfere with your operations [16:09:39] At least 4 species of black corals seen and at least 3 species of bamboo corals [16:09:43] and thanks @scott, i'm no replacement/substitute for u :) [16:10:04] Very good! Hi Amanda! [16:10:23] Hi Mike! [16:10:37] In sponges we have seen the wedding basket sponge, also Farrea , then several Demospongiae: the Oceanapia's, few Dendroceratida looking tanr ts, [16:11:11] crusts, several thin crusts, bluish and whitish probably Poecilosclerida [16:11:26] And a small bright yellow Calcarea [16:11:40] Looks like it is in feeding posture [16:12:19] It is a cup coral I think too [16:12:22] I thinnk the seastar is on a bamboo coral. You can see a thin branch poking out tio front [16:13:09] LAT : 29.586177 , LON : -79.122648 , DEPTH : 759.6256 m, TEMP : 8.25027 C, SAL : 35.03951 PSU, DO : 4.50749 mg/l [16:14:01] I would say today the distinct feature is that Demosponges are appearing with more diversity. [16:15:07] lets get closer [16:15:18] Is that a sponge or a closed anemone on the stalk? [16:15:39] I've seen that at least 4 times today. [16:16:21] Also a stoloniferous octocoral overgrowth on left side of skeleton [16:17:50] Scott, is so hard to leave, this is really interesting!!! [16:18:09] LAT : 29.586218 , LON : -79.122686 , DEPTH : 756.2482 m, TEMP : 8.32184 C, SAL : 35.05408 PSU, DO : 4.49081 mg/l [16:19:05] @Maria: so true! [16:19:35] The sponge we wewre headed to looks like a clean version of what we collected earlier in the dive. [16:21:01] sorry, missed the sp of the catshark [16:21:15] Yes @Scott lets see when we get closer [16:21:56] yes the yellow one id dead [16:22:12] Shark seen at very beginning of bottom time, engaged in munching a large hatchetfish = another Squalidae, Etmopterus hillianus, a 'lanternfish' one of the deep-water sharks that glows. This type of shark is a very fast and active predator. Not surprising to see it attacking a hatchetfish. But probably the prey was revealed to the shark by the ROV lights. [16:23:09] Sometime hovering midwater fishes, like the hatchetfish, are injured by the ROV thrusters, making them easy prey [16:23:11] LAT : 29.586249 , LON : -79.122729 , DEPTH : 755.311 m, TEMP : 8.31305 C, SAL : 35.05686 PSU, DO : 4.48052 mg/l [16:23:18] Thanks, Ken! [16:23:26] Do you know what the shark that we just sw is? [16:23:29] *saw [16:24:09] Could we get a closer look at the yellow solitary hydroid behind sponge on left? [16:25:46] I think that is a tunicate on the hydroid [16:25:56] Very, very weird. [16:26:14] Didnt the previous collected Oceanapia had this green solitary hydrid too, didnt it? [16:26:19] Looks like a solitary tunicate (2 openings at distal end) on a solitary hydroid [16:26:59] The hydroid has well developed gonophores, the berry-like structures around the mouth that are essentially budding jellies [16:28:10] LAT : 29.586277 , LON : -79.122779 , DEPTH : 754.2444 m, TEMP : 8.32961 C, SAL : 35.05254 PSU, DO : 4.45933 mg/l [16:28:25] Nice imagery of the Blotched Catshark, Scyliorhinus meadi, which sits on the bottom among coral. This species is strongly associated with Lophelia habitat [16:29:06] OH NO!!! Octopus [16:30:06] Not all sharks swim continuously. Coral-loving catsharks are typically sedentary. The markings are again a nice illustration of 'disruptive camo', useful for breaking up the body outline, and useful for a sit-and-wait stealth predator [16:32:55] And to bring water in to pass over the gills [16:33:11] LAT : 29.58631 , LON : -79.122814 , DEPTH : 752.8294 m, TEMP : 8.33223 C, SAL : 35.05353 PSU, DO : 4.46459 mg/l [16:34:51] This white colony has a morphology that I associate with Enallopsammia... can you zoom on polyps? [16:34:55] when stunned by the powerful ROV lights, dark-adapted deep-water fishes often react by shaking the head back and forth. The catshark did this at one point, and earlier a cutthroat eel did the same thing [16:35:29] This is an octocral - a Corallium of some kind. [16:35:40] small bright yellow round sponge to the right of the base of the Stylaster [16:36:25] The Coralliidae do have an almost "stony" skeleton. Think precious pink corals used in jewelry. [16:37:24] Their skeleton is essentially like concrete: cemented together sclerites. [16:37:32] No, not aragonite. [16:38:11] LAT : 29.58635 , LON : -79.12281 , DEPTH : 752.2921 m, TEMP : 8.31511 C, SAL : 35.04971 PSU, DO : 4.45972 mg/l [16:38:36] And nice cup coral to right of blue sponge [16:39:03] Consider that the red octopus would appear gray-black in ambient light at this depth. Red absorbs the dim blue wavelength light that arrives from the surface. So, this guy is doing just what he normally would do. Not prepared for white light. [16:39:46] It isn't a primnoid, but I can't say what it is [16:40:50] For that white coralliid, have a look at this Hemicorallium: https://www.ncei.noaa.gov/waf/okeanos-animal-guide/Coralliidae039.html [16:41:08] What is the large yellow fan to left? [16:41:23] Just off screen now [16:42:01] There it is! [16:42:11] Hi all! [16:42:16] hi [16:43:12] LAT : 29.586383 , LON : -79.122882 , DEPTH : 748.9329 m, TEMP : 8.31007 C, SAL : 35.05039 PSU, DO : 4.43825 mg/l [16:43:14] Maybe Paramuricea... But I'm thinking Acanthogorgia, but need a closer look. [16:43:51] This is a tough on to say. I can't really tell how thick the coenenchyme is... [16:44:08] I'm leaning Plexauridae [16:44:15] Would a sample be possible? [16:44:35] Could Amanda say if this si something familar? [16:44:51] OK - I understand animals at this depth that are yellow, orange or red - all absorb ambient blue light. But why would a sponge be blue??? Would be neat to turn off the ROV lights, and turn on a UV light. Bet this blue sponge fluoresces, emitting blue light??? [16:44:56] All I can say is that I can't identify it. So can't tell you if it is new or not. [16:45:31] sorry I just stepped back- [16:45:34] The more I see of it the more I am convinced it is a Plexauridae, but can't nail down the genus. [16:46:05] I agree plexauridae- it would be nice to confirm genus -so collect if you can [16:46:54] I leave it to you to decide. A small clipping can go in the slurp if you are worried about space. [16:47:28] Cut first and then slyurp the snip. [16:47:32] you could clip and slurp as scott suggests, saving space [16:47:42] Did we loose audio connection ? [16:47:46] Think audio on conference line has gone out. [16:47:52] it is very flexible [16:47:57] If you want to reserve the space, move on. I am only telling you I can't ID it from video. [16:48:12] LAT : 29.586365 , LON : -79.122911 , DEPTH : 749.2065 m, TEMP : 8.32328 C, SAL : 35.05198 PSU, DO : 4.43404 mg/l [16:48:25] double checking audio [16:48:31] I will hang up and call again [16:48:54] Definietley preserve a piece for DNA! [16:49:23] Although if the entire fragment goes into ethanol it isn't such a big deal since that can also be used for DNA extraction. [16:53:13] LAT : 29.586366 , LON : -79.122888 , DEPTH : 748.7948 m, TEMP : 8.3348 C, SAL : 35.05299 PSU, DO : 4.44374 mg/l [16:54:12] Steph and Kim, I have lost the audio in the phone. So I am still hearing you through the live stream, but I might have to respond to your questions just through the chat. Cause I called again and I am still not hearing yu through the phone line [16:54:16] Sounds good, Scott. We usually take a subsample of the overall sample for DNA. Just wanted to know if the structure for taxonomic records was important. Part of it might get destroyed in the suction process [16:54:55] nice collection [16:56:20] I can hear you on the conference line, but you sound far away (and can also hear the pilots, which is unusual on conference line). Then I hear you a few seconds later over the live stream. [16:57:03] So we are going to call in again, stand by [16:57:07] im going to be a pest about the lasers, sorry :( but can they be turned on please :) [16:57:14] Possibly Geodia true Steph [16:57:41] More of those fish caverns Steph? [16:58:13] LAT : 29.586426 , LON : -79.122967 , DEPTH : 749.7899 m, TEMP : 8.32817 C, SAL : 35.0518 PSU, DO : 4.41453 mg/l [17:01:39] Lost audio on conference line again. Now just getting noise. [17:03:14] LAT : 29.586439 , LON : -79.122869 , DEPTH : 749.8019 m, TEMP : 8.35383 C, SAL : 35.05592 PSU, DO : 4.4302 mg/l [17:03:18] Hi Christa, we're working on it [17:03:24] redialing in [17:03:28] can we turn on the lasers, please? [17:03:32] I have not been able to get the audio on the phone [17:03:48] Hey amanda, they are on. Just sometimes hard to see [17:03:53] The sound is not me [17:04:14] sorry i see them now [17:04:25] No problem :) [17:04:39] Now I can hear you [17:05:25] Yes, this is the same species we "missed" earlier [17:05:32] Primnoidae... [17:05:44] You said that pretty well [17:06:15] The ID to genus depends on polyp level characteristics, but it does look grossly like Paracalyptrophora. [17:06:34] Note the polyp "heads" are pointing down, an important characteristic [17:07:00] Also the number of polyps that arise from the same point (the whorl). I think it was 2 or 3 [17:07:52] Yes, looks like more than that. [17:08:11] more than 3 [17:08:14] LAT : 29.586483 , LON : -79.122859 , DEPTH : 750.5361 m, TEMP : 8.33285 C, SAL : 35.05297 PSU, DO : 4.41641 mg/l [17:08:38] Good look. You can move on when you got the imaging you like. [17:09:29] Good cooment Kim. It appears as the colony ages and the main axis grows in thickness, the whorl pattern breaks down. [17:10:51] Steph I am seeing more of this roundish white sponge [17:11:01] if we can focus in one of them [17:11:32] Yes [17:13:15] LAT : 29.586421 , LON : -79.122877 , DEPTH : 750.793 m, TEMP : 8.33969 C, SAL : 35.05381 PSU, DO : 4.41536 mg/l [17:14:59] @ALL: THe ship and crew have granted us an extended dive today. Off bottom will now be 1800, dive planning call at 1810. A very big thanks to the ship's crrw [17:16:59] We only have so many extended dive cards we can play, but this ridge feature was unmapped a few weeks ago and so far has been a very rewarding dive. Weather looks great today, therefore going to strike while the iron is hot [17:17:38] Yes it might be a Geodiidae, or a Petrosiidae. Petrosia ovata you can check looks a lot like this sponge [17:18:15] LAT : 29.586437 , LON : -79.122874 , DEPTH : 750.1664 m, TEMP : 8.33393 C, SAL : 35.05808 PSU, DO : 4.42461 mg/l [17:19:28] The highest water movement rate measured from Demospongiae are 1l/cc/h, so a 1 lt sponge [17:19:42] 1 lt sponge might filter 24 tons water per day [17:19:49] What fish is this? [17:20:43] Fish is an angler, Genus Lophoides, one of three similar species closely associated with Lophelia habitat and rubble. Fringes are camo [17:21:47] Lophoides beroe = fish from Andrea Quattrini [17:22:11] aka goosefish [17:22:58] In this angler, the fishing pole lure is currently folded backwards. Such anglers are stealth predators with lightning-fast strike, one of the fastest among vertebrates [17:23:16] LAT : 29.586398 , LON : -79.122877 , DEPTH : 750.4999 m, TEMP : 8.31464 C, SAL : 35.051 PSU, DO : 4.42159 mg/l [17:25:10] you all are doing awesome! [17:25:47] meganmcculler leaves the room [17:26:06] Blue or Green eyes mean that the typical blue bioluminescence produced by most midwater fishes is reflected back, defeating ventral camo bioluminescence. Blue eyes enable the fish to see red or yellow light organs used by midwater fish for cryptic communication - but defeated by such eyes. [17:26:53] NICE info about the blue eyes, and Nice summary Steph [17:28:16] LAT : 29.586525 , LON : -79.122945 , DEPTH : 748.2475 m, TEMP : 8.38554 C, SAL : 35.05856 PSU, DO : 4.41722 mg/l [17:30:29] Fiber optic [17:30:44] And the spicules anchor the sponge into the sediment/rubble. [17:30:57] YES!!! Shirley fast! Beautiful, there are many of them around [17:31:08] This is like a ball of cotton--it has that same consistency. [17:33:17] LAT : 29.586554 , LON : -79.122898 , DEPTH : 750.9935 m, TEMP : 8.33593 C, SAL : 35.04792 PSU, DO : 4.42023 mg/l [17:34:29] Several Heterotella! [17:34:34] Yes, lots of them! [17:35:10] Incredible shape [17:35:38] as babies [17:35:51] They come in when small, and as they grow, they cannot get out of the "sieve"! [17:36:28] Actually, there's a sieve at the top! [17:36:35] Sure, probably [17:36:45] Shirley - earlier we saw a group of those globular blue sponges. Any idea why a sponge would be blue. I was thinking of Eddie Widder's UV explorations - any the speculation of mine that blue sponges at depth may fluoresce under UV?? [17:36:48] Not sure about species! [17:37:32] Might be interesting to note the water temp today is warmer and oxygen lower than yesterday's dive with only 100 m depth difference: e.g. yesterday DEPTH : 834.0894 m, TEMP : 6.58355 C, SAL : 35.06392 PSU, DO : 6.42725 mg/l vs now DEPTH : 750.1664 m, TEMP : 8.33393 C, SAL : 35.05808 PSU, DO : 4.42461 mg/l [17:38:10] Good question, Ken. I don't know. There aren't that many blue sponges. [17:38:17] LAT : 29.586644 , LON : -79.122953 , DEPTH : 752.8095 m, TEMP : 8.31824 C, SAL : 35.05158 PSU, DO : 4.44112 mg/l [17:38:35] Kenneth I was looking for a posible ID of that globular blue sponge that Steph . mentioned as Hymedesmia, the closest shape I have found with those characteristic oscula is Hemimycale, but I have not found a blue one [17:38:38] Would be interesting to put a UV light and filter on the ROV (don't shoot me, GFOE guys!). [17:38:53] YES Shirlley [17:40:07] Would turn off the light momentarily be at all possible/interesting? [17:40:13] How big was the sponge, Cris? There's a blue lithistid, Scleritoderma cyanea--a lithistid. [17:41:43] I was just like an idea later if we want to check for bioluminesce on this habitat. JE JE [17:42:00] Make sure you tell them that I didn't suggest that they turn off the lights! [17:42:36] don't worry shirley ;-) [17:42:56] I would NEVER suggest that--LOL! I already knew the answer when it was asked--LOL!!! [17:43:18] LAT : 29.586622 , LON : -79.122917 , DEPTH : 753.5947 m, TEMP : 8.33773 C, SAL : 35.05966 PSU, DO : 4.42179 mg/l [17:43:36] @Shirley I would have to clarify with @Kenneth if we are talking about the same blue sponge. The one I saw is not round but it was massive, ramose but it had quite distinct oscula that look very similar to Hemimycale columnella [17:43:52] cool try. Thanks pilots! [17:44:55] Lots of small spherical lithistid sponges. Very cool. The large sponge is a Pachastrellid. [17:45:49] Shirley - There is also a blue encrusting sponge that occurs on Lophelia habitat at 300-500 m depth in the northern Gulf Mex [17:46:06] We don't have a common name for it; I can tell you, though, that these sponges have a terrible odor! [17:46:43] are you all collecting water/niskin samples during the dive? [17:46:53] Lithistid sponges are typically the source of many novel chemicals with pharmaceutical relevance! [17:47:51] Hi Amanda, unfortunately, we won't be colelcting any water samples on this cruise [17:48:01] This scleractinian is growing off a bamboo coral. Turn about is fair play, I guess. [17:48:15] Based on the spectacular work of Eddie Widder using UV at depth, a large number of sessile inverts do indeed fluoresce a variety of colors. Would be cool to outfit an OE mission specifically to address the mysterious world of fluorescing deep-water organisms, inverts and fishes [17:48:19] LAT : 29.586651 , LON : -79.122868 , DEPTH : 750.5591 m, TEMP : 8.47421 C, SAL : 35.07435 PSU, DO : 4.42662 mg/l [17:48:21] Usually the bamboos are growing off stony coral rubble. [17:49:15] was there live bamboo, too? [17:49:31] nm [17:50:05] Stolonifeous octocoral overgrowth [17:50:23] On some previous submersible and ROV missions, we have occasionally turned off the lights and sat dark for 1-2 min. When the lights were turned back on, many fishes that otherwise avoid the vehicle have converged very closely around the vehicle [17:53:19] LAT : 29.586674 , LON : -79.123031 , DEPTH : 753.7898 m, TEMP : 8.44336 C, SAL : 35.06445 PSU, DO : 4.43014 mg/l [17:55:09] red fish is the Orange Roughy, Gephyroberyx darwini [17:57:04] @kim thanks re niskin sampling [17:57:52] :yes: [17:58:19] LAT : 29.586566 , LON : -79.122972 , DEPTH : 751.744 m, TEMP : 8.46246 C, SAL : 35.07279 PSU, DO : 4.42351 mg/l [17:58:47] Tucked back there may have been the first Chrysogorgiidae of the expedition... [17:58:55] The complexity of the geomorphology is increasing [17:59:02] Didn't have a good look, so I could be worng [17:59:10] lots of small sponges growing on those crivces [17:59:14]