[11:50:57] allencollins leaves the room [12:03:54] EX2107_DIVE09 Test message [12:32:16] Today's dive is "Tortugas Scarp", a steep wall on the Tortugas Terrace. Our initial name referred to Agassiz Valleys, which are nearby but east of the dive sight. [12:37:53] allencollins leaves the room [12:44:20] allencollins leaves the room [13:19:59] Morning All!!! [13:20:54] There is going to be a delay, its a minor ship issue. Matt will be sending out an email with more shortly.... [13:23:21] We will be deploying at 9:30, so one hour delay. [13:30:37] stephaniefarrington leaves the room [13:30:41] Sorry, delay until 10:00 AM. [13:36:31] allencollins leaves the room [13:42:51] allencollins leaves the room [13:50:37] scottfrance leaves the room [14:27:16] Prepping for deployment, so we are still on schedule for 10AM deployment. [14:34:04] allencollins leaves the room [14:48:46] And on schedule for 10:!5 pre-dive call. [14:51:11] EX2107_DIVE09 ROV Launch [14:54:01] allencollins leaves the room [15:00:42] EX2107_DIVE09 ROV on Surface [15:01:31] EX2107_DIVE09 ROV Descending [15:02:59] LAT : 24.158931 , LON : -83.053564 , DEPTH : 33.1123 m, TEMP : 26.82886 C, SAL : 35.62556 PSU, DO : 6.54173 mg/l, TURBIDITY : 0.696 FTU [15:03:32] stephaniefarrington leaves the room [15:08:00] LAT : 24.16192 , LON : -83.053131 , DEPTH : 50.6056 m, TEMP : 26.34894 C, SAL : 36.29468 PSU, DO : 6.29379 mg/l, TURBIDITY : 0.7631 FTU [15:11:18] Hi Scott. Call in 4. [15:11:59] Thanks Allen. [15:13:00] LAT : 24.163939 , LON : -83.053291 , DEPTH : 55.6251 m, TEMP : 25.41736 C, SAL : 36.3849 PSU, DO : 6.04629 mg/l, TURBIDITY : 0.7937 FTU [15:13:22] allencollins leaves the room [15:16:45] I think we are waiting for General Announcement prior to call. [15:16:59] GA on recording, etc. [15:18:00] LAT : 24.164144 , LON : -83.053647 , DEPTH : 56.5652 m, TEMP : 25.38191 C, SAL : 36.38947 PSU, DO : 6.04996 mg/l, TURBIDITY : 0.7998 FTU [15:21:12] Whoa! It is like Darren on Bewitched! We just magically changed mapping leads! [15:22:14] christophermah leaves the room [15:23:01] LAT : 24.164035 , LON : -83.05356 , DEPTH : 101.7785 m, TEMP : 21.58292 C, SAL : 36.65377 PSU, DO : 5.05747 mg/l, TURBIDITY : 0.8486 FTU [15:23:44] Just as a note on the transect length: the extension along the top of the plateau edge is simply there for a direction to head. There is no need for us to hurry to get to the end of it. [15:23:51] stephaniefarrington leaves the room [15:27:49] johnreed leaves the room [15:28:02] LAT : 24.163905 , LON : -83.053304 , DEPTH : 259.6591 m, TEMP : 14.11104 C, SAL : 35.82858 PSU, DO : 4.15424 mg/l, TURBIDITY : 0.8913 FTU [15:28:17] emilycrum leaves the room [15:29:33] Good chance of seeing spawning Illex today. [15:30:35] I think there is an open speaker in the control room. Lots of echo [15:33:03] Scott, is echo gone? Might be from EC headset, which is wireless [15:33:05] LAT : 24.163742 , LON : -83.053017 , DEPTH : 416.5645 m, TEMP : 10.64441 C, SAL : 35.2933 PSU, DO : 3.92246 mg/l, TURBIDITY : 0.9158 FTU [15:33:48] Yes, it is now gone. [15:34:25] It first appeared when I heard mapping lead, then went away, then came back a couple of times. But now not heard. [15:35:29] D2 dove in this area a couple of years ago (november I think) and landed right in a spawning aggregation. Lots of squid carcasses on the bottom being scavanged. [15:35:36] Some info from the Dry Tortugas park web site: "Discovered by Ponce de Leon in 1513, the Dry Tortugas were named after the large population of sea turtles living in the island’s surrounding waters. “Tortugas” means turtles in Spanish, and Ponce de Leon himself caught over 100 sea turtles during his time on the island." [15:36:46] I aso trawled a cod-end full of squid near here just before Deepwater Horizon. Looking for sperm-whale food. [15:36:54] @Mike: I noted on our call yesterday that tomorrow we may be in sperm whale land (a little W and deeper from here), and so that might suggest cephalopods... [15:37:28] Note that the map is still up on camera 3. [15:37:44] e.g. hasn't been changed over to quad camera [15:38:04] LAT : 24.163473 , LON : -83.052728 , DEPTH : 565.4152 m, TEMP : 8.32849 C, SAL : 35.00262 PSU, DO : 3.91061 mg/l, TURBIDITY : 0.9096 FTU [15:41:59] I think one difference that Stephanie is asking about is that all sponge cells are essentially at the "stem cell" phase, which means they can differentiate to other cell types. Whereas in these more complex animals, cells reach a final stage and can't [typically] revert or change function (except stem cells). [15:42:19] Our muscle cells can't change to become skin cells. [15:42:43] Although, researchers are sure working on doing something like that (for medical purposes!) [15:43:03] allencollins leaves the room [15:43:04] LAT : 24.163137 , LON : -83.052476 , DEPTH : 697.6585 m, TEMP : 6.49287 C, SAL : 34.90434 PSU, DO : 4.53375 mg/l, TURBIDITY : 0.9035 FTU [15:43:17] emilycrum leaves the room [15:46:27] e.g. that is why you can break up some sponges and they canb reform the body. [15:48:05] LAT : 24.162753 , LON : -83.052087 , DEPTH : 703.4457 m, TEMP : 6.42924 C, SAL : 34.90139 PSU, DO : 4.59671 mg/l, TURBIDITY : 0.8974 FTU [15:53:05] LAT : 24.162399 , LON : -83.051558 , DEPTH : 703.8734 m, TEMP : 6.4326 C, SAL : 34.90229 PSU, DO : 4.57256 mg/l, TURBIDITY : 0.8974 FTU [15:58:06] LAT : 24.16208 , LON : -83.051057 , DEPTH : 703.3716 m, TEMP : 6.42428 C, SAL : 34.90267 PSU, DO : 4.58023 mg/l, TURBIDITY : 0.8974 FTU [15:58:08] allencollins leaves the room [15:59:26] Could someone reboot the sample laptop please [16:01:42] @jonathan Matt has been notified. [16:02:20] emilycrum leaves the room [16:03:07] LAT : 24.161746 , LON : -83.050584 , DEPTH : 704.2583 m, TEMP : 6.40939 C, SAL : 34.90276 PSU, DO : 4.58883 mg/l, TURBIDITY : 0.8974 FTU [16:04:58] Thank you! [16:06:41] What is the target bottom depth for this dive? [16:07:00] Want to collect? I'll bet Allen's answer really should be the Periphylla we already passed. [16:07:29] Ken: 1000m is target but heard that 980 is what they are seeing [16:07:31] @Ken: Target was about 989 m. [16:08:07] Thanks - so time for tea until then [16:08:09] LAT : 24.161557 , LON : -83.050348 , DEPTH : 789.7148 m, TEMP : 6.19053 C, SAL : 34.90636 PSU, DO : 4.70904 mg/l, TURBIDITY : 0.9035 FTU [16:08:51] @Ken: there is always time for tea. [16:09:52] Time for Tea for sure. Always a little time to get oriented on bottom, plus we need to get the benthopelagic medusa that will be there. [16:10:06] Hah! [16:11:18] jonathanjackson leaves the room [16:12:04] It is really useful to get that OBEXNAV feed intermittently in the CHATROOM view. It would be even better if it were possible to include current direction and velocity. I realize velocity is funky when the ROV is in midwater, but when holding position on bottom, that data would be very valuable - especially in retrospect when viewing imagery post-div [16:12:31] Good point @Ken [16:13:08] LAT : 24.16142 , LON : -83.050248 , DEPTH : 941.7371 m, TEMP : 5.85114 C, SAL : 34.8656 PSU, DO : 4.95235 mg/l, TURBIDITY : 0.9219 FTU [16:13:19] A good challenge for the tech guys [16:13:23] Squid Prob Illex sp. [16:14:03] A shoal of squid? [16:14:13] I just made that up... [16:17:34] emilycrum leaves the room [16:18:01] There has actually been considerable debate about whether squid(s) school. My answer is that some species do, including Illex spp. [16:18:09] LAT : 24.161407 , LON : -83.049969 , DEPTH : 964.8022 m, TEMP : 5.80654 C, SAL : 34.86341 PSU, DO : 5.00992 mg/l, TURBIDITY : 0.928 FTU [16:18:32] Yes, the Sprula paper was publised online a month after teh observation. [16:18:34] allencollins leaves the room [16:18:59] Spirula paper [16:19:29] EX2107_DIVE09 ROV on Bottom [16:20:01] stephaniefarrington leaves the room [16:20:24] how many days? [16:21:52] observed 27 Oct, published 27 Nov [16:22:13] Hello! [16:22:17] Stephanie! You were complaining Allen stops too much to collect, but you want to add sediment cores to the ROV?!! ;-) [16:22:39] Diversity 2020, 12, 449; doi:10.3390/d12120449 [16:23:09] LAT : 24.161369 , LON : -83.049951 , DEPTH : 985.1464 m, TEMP : 5.8101 C, SAL : 34.87258 PSU, DO : 4.97721 mg/l, TURBIDITY : 0.9035 FTU [16:24:21] allencollins leaves the room [16:24:32] hatchetfish [16:24:56] Maybe some of the sand piles are Acanthocaris burrows (the blind lobsters)... [16:25:13] I've watched hatchetfish go down into rocks on the bottom - made me wonder if they can hide out when they are in shallower waters [16:26:18] munnopsid molt> [16:26:25] agree isopo [16:26:38] "Water walkers" [16:27:00] nope, landed pretty heavy must be an intact one [16:27:06] sea cucumber poop! [16:28:10] LAT : 24.16142 , LON : -83.049967 , DEPTH : 985.157 m, TEMP : 5.80261 C, SAL : 34.86698 PSU, DO : 4.99913 mg/l, TURBIDITY : 0.9158 FTU [16:28:31] stephaniefarrington leaves the room [16:30:30] Be aware that there is a black coral down here that branches from the base, and so from a distance it looks like a crinoid! [16:30:42] And its tissue is yellow, to boot. [16:30:49] Larvacean... [16:31:08] jonathanjackson leaves the room [16:32:55] Illex sp. [16:32:59] So, we can have a shoal of scientists, but never a school. I like squad of squid [16:33:10] LAT : 24.16135 , LON : -83.049961 , DEPTH : 985.2616 m, TEMP : 5.79878 C, SAL : 34.8754 PSU, DO : 5.02479 mg/l, TURBIDITY : 0.928 FTU [16:33:11] cold be I. coindetii or I. oxygonius [16:33:33] Happy Mollusc Monday! [16:33:48] my guess is that it got a bit blinded by the lights and dove into the bottom ;-) [16:33:51] That hatchetfish seemed to be saying "step away from the squid!" [16:36:21] @Ken: which rattail is this? [16:37:09] The nifty macrourid is not Nezumia, may be Sphagemacrurus grenadae [16:37:50] allencollins leaves the room [16:37:58] good morning! [16:38:10] LAT : 24.161404 , LON : -83.050247 , DEPTH : 983.8303 m, TEMP : 5.79846 C, SAL : 34.88969 PSU, DO : 4.98653 mg/l, TURBIDITY : 0.9096 FTU [16:38:40] Deep sea rolly poly [16:38:51] i just saw a tripodfish-Bathypteriois. Not sure if you noticed it at all, but if you see another one can you get a zoom please? [16:39:05] Definiteily not worth a collection - very common, commonly collected, and even kept in aquaria. [16:40:04] Midwater fish over the big isopod is Cyclothone [16:41:05] I have one of the plush! Its so neat and well made! [16:42:34] I couldnt tell, but I didnt think there a subcaudal notch? [16:42:43] stephaniefarrington leaves the room [16:42:46] Just recovered from a laptop crash! Ugh. But back in business [16:43:11] LAT : 24.16138 , LON : -83.050299 , DEPTH : 984.0583 m, TEMP : 5.79894 C, SAL : 34.89306 PSU, DO : 5.01372 mg/l, TURBIDITY : 0.928 FTU [16:43:48] Tripod fish Bathypterois cf. quadrifilis (if no subcaudal notch) [16:44:01] KevinRademacher leaves the room [16:44:18] a good shot of the caudal region would help for next one! [16:44:23] The tripodfish is Bathypterois quadrifilis. Very similar to B. phenax, but with very prominently white outlined scale pockets. B. phenax is typically all black. B. quadrifilis can be nearly all white at times [16:45:07] Andrea - B. quadrifilis does indeed have a very well developed subcaudal notch, but not visible in this perspective [16:45:50] @ken-i dont think it does. i only think B. phenax does? [16:46:51] I'm back [16:47:30] Illex going by @Mike [16:48:12] LAT : 24.161442 , LON : -83.050498 , DEPTH : 984.5919 m, TEMP : 5.8004 C, SAL : 34.89323 PSU, DO : 5.00933 mg/l, TURBIDITY : 0.9524 FTU [16:49:04] jonathanjackson leaves the room [16:49:08] Off to class for the next hour, so the next beep you hear is me hanging up... [16:49:10] andreaquattrini leaves the room [16:49:36] @ken apologies! you would know best re subcaudal notch :) [16:49:42] Got you again! [16:52:16] Sulak 1977 Systematics and Biology of Bathypterois, erected subgenus Bathypterois for those blessed with the mysterious and yet unexplained subcaudal notch. Early on, someone speculated that the long fin rays are raked through the notch to be cleaned!! Fiction. The notch is flanked by guard scales, so not always readily visible. [16:53:13] LAT : 24.161496 , LON : -83.050595 , DEPTH : 985.1402 m, TEMP : 5.79878 C, SAL : 34.89358 PSU, DO : 5.00668 mg/l, TURBIDITY : 1.3248 FTU [16:53:23] @John: Hopefully you are asking Mike, not me! [16:53:32] Star phone! [16:54:19] ca we zoom [16:54:24] @ken thanks! i was just checking your paper. Great to know that it is not always visible! [16:57:01] Looks like stalked Hyalonematidae [16:57:31] Hello everyone! [16:57:44] Happy Mollusc Monday Cris! [16:57:50] jonathanjackson leaves the room [16:58:13] LAT : 24.161546 , LON : -83.050754 , DEPTH : 983.5689 m, TEMP : 5.79862 C, SAL : 34.89517 PSU, DO : 5.0004 mg/l, TURBIDITY : 1.1416 FTU [16:58:14] Happy mollusk Monday Nolan! ^^ [16:58:34] Beautiful Hyalonema [16:59:11] @Nolan what day of the week for corals?! [16:59:17] emilycrum leaves the room [16:59:31] Nice head on view of B. quadrifilis. For this specimen, you can just see the indentaion of the subcaudal notch. The outspread pectoral fin rays form a sort of forward-directed satellite dish, these rays connect via three thick occipital-spinal nerves to the spinal cord, each with an unusual extra-vertebral ganglion. The whole setup is a sensitive tactile antenna to detect tiny nektonic prey. [17:01:03] Well between hexacorals and octocorals, theres an average of seven tentacles and seven days of the week. So I would say that every day is Coral Day! [17:01:18] Ink is mostly mucus and melanin. [17:01:43] contains some other chemicals too. [17:01:54] that's sounds NICE :) [17:02:18] I mean coral day, not mucus.... [17:02:28] @Asako Yes! [17:03:14] LAT : 24.161532 , LON : -83.05088 , DEPTH : 984.9975 m, TEMP : 5.79522 C, SAL : 34.89309 PSU, DO : 4.99674 mg/l, TURBIDITY : 1.1172 FTU [17:03:41] Can we collect one of them? [17:03:49] This dive is right at the depth (1000-1100) where the last photons of sunlight penetrate - and can still be used by creatures living in the twilight between the mesophotic and dysphotic zones. Bathypterois quadrifilis is one of several fish species that adjusts its background coloration to depth. Shallower than current depth, it will express more white, deeper more black. [17:04:14] Lauren Simonitis at Friday Harbor Labs is looking at the ecology of inks as defenses. Shes looking at cuttlefish, sea hares, and pigmy spermwhales. Turns out, ink is SUPER interesting! [17:04:26] Scale worm [17:04:35] scaleworm [17:05:19] Suction? [17:07:52] allencollins leaves the room [17:08:15] LAT : 24.161549 , LON : -83.050868 , DEPTH : 985.0414 m, TEMP : 5.79506 C, SAL : 34.89287 PSU, DO : 5.02326 mg/l, TURBIDITY : 0.9219 FTU [17:11:04] johnreed leaves the room [17:11:05] There is also a group of midwater fishes called 'tube-shoulders' the Platytroctidae, Alepocephaliformes, that have an ink sac in the shoulder region, and which can squirt out a cloud of ink. Good example is the species Searsia koefoedi [17:11:28] Nice slurp! I'll be out for lunch. [17:11:47] @Ken That's so neat! Thank you! [17:11:57] andreaquattrini leaves the room [17:12:52] NolanBarrett leaves the room [17:13:16] LAT : 24.161557 , LON : -83.050876 , DEPTH : 985.3248 m, TEMP : 5.79539 C, SAL : 34.89277 PSU, DO : 4.98455 mg/l, TURBIDITY : 0.9035 FTU [17:18:17] LAT : 24.161576 , LON : -83.050867 , DEPTH : 982.3142 m, TEMP : 5.79496 C, SAL : 34.8929 PSU, DO : 4.99104 mg/l, TURBIDITY : 0.9585 FTU [17:20:28] andreaquattrini leaves the room [17:21:56] kensulak leaves the room [17:22:06] johnreed leaves the room [17:22:24] cristianacastellobranco leaves the room [17:23:16] If the squid were actively spawning, we would probably be seeing dead ones on teh bottom [17:23:19] LAT : 24.161543 , LON : -83.050941 , DEPTH : 980.7471 m, TEMP : 5.80751 C, SAL : 34.89164 PSU, DO : 4.98432 mg/l, TURBIDITY : 0.9768 FTU [17:23:23] not a rattail [17:23:45] probably a cusk eel [17:23:50] Fish has a caudal fin, probably in Order Gadiformes [17:24:32] squid on patrol [17:25:27] The gray fish is an Ophidioid, cusk eel, probably Monomitopus [17:26:06] wow, the scour on the rock from the antennae is impressive. must be really soft [17:28:18] LAT : 24.161529 , LON : -83.051121 , DEPTH : 979.4004 m, TEMP : 5.80315 C, SAL : 34.8919 PSU, DO : 4.9896 mg/l, TURBIDITY : 0.9585 FTU [17:30:29] I think it is worth noting that when Illex are around, they are the dominent animals we see. [17:31:10] KevinRademacher leaves the room [17:33:19] LAT : 24.161617 , LON : -83.051168 , DEPTH : 979.3998 m, TEMP : 5.8004 C, SAL : 34.89192 PSU, DO : 4.99523 mg/l, TURBIDITY : 0.9158 FTU [17:35:09] georgematsumoto leaves the room [17:35:49] johnreed leaves the room [17:35:52] long skinny eel [17:38:04] Fish is probably Polymixia [17:38:20] LAT : 24.161622 , LON : -83.05145 , DEPTH : 974.3982 m, TEMP : 5.79302 C, SAL : 34.8921 PSU, DO : 5.01111 mg/l, TURBIDITY : 1.3492 FTU [17:39:43] We published a paper on a spawning aggregation of Polymixia beard fish in a deep water sinkhole off Marathon key. [17:39:50] Have to leave. [17:41:12] christophermah leaves the room [17:43:21] LAT : 24.161588 , LON : -83.051391 , DEPTH : 976.4692 m, TEMP : 5.80519 C, SAL : 34.8888 PSU, DO : 5.01766 mg/l, TURBIDITY : 1.1294 FTU [17:44:13] andreaquattrini leaves the room [17:44:31] stephaniefarrington leaves the room [17:44:49] location = squid city [17:45:04] Polymixia lowei is the fish seen a while ago with black spot in dorsal fin. This is a beardfish, which has two longish chin barbels that rake the bottom. The specimen seen made a quick flick at the bottom, probably having detected something interesting with its barbels. [17:47:26] It would be worth not ignoring the cutthroat eels. There are a few genera and several species. The specimen seen to the left of Polymixia was stationary, undulating just over the substrate. That behavior is typical of genus Ilyophis, the arrowtooth eel. But there are a few rare genera and species with the same habit. The more abundant Synaphobranchus almost never sits stationary, normally up off the substrate and swimming [17:48:22] LAT : 24.161513 , LON : -83.051542 , DEPTH : 976.2685 m, TEMP : 5.80115 C, SAL : 34.89303 PSU, DO : 4.9738 mg/l, TURBIDITY : 0.9524 FTU [17:49:38] For cutthroat eels, if possible to zoom on a cooperative individual, the key characters are the head and pectoral region. So, nice to zoom in as close as feasible. [17:49:43] Some issues, but they are confident they will work it out [17:50:46] andreaquattrini leaves the room [17:53:23] LAT : 24.161476 , LON : -83.051416 , DEPTH : 973.6573 m, TEMP : 5.79878 C, SAL : 34.89393 PSU, DO : 5.00152 mg/l, TURBIDITY : 0.9219 FTU [17:53:27] adamskarke leaves the room [17:54:14] I'm back, and it is still sandy! [17:55:17] I've logged into chat specifically to make a joke about how this what marine biologists think about when anyone mentions Squid Game [17:57:03] "upside down" in thta it is swimming mouth upward... [17:57:49] I watched the first 5 min of ep 1 of Squid Game and then gave up on it. [17:58:19] @Scott we saw seapen! [17:58:23] LAT : 24.16147 , LON : -83.051447 , DEPTH : 975.3255 m, TEMP : 5.77814 C, SAL : 34.89369 PSU, DO : 5.00128 mg/l, TURBIDITY : 0.9524 FTU [17:58:38] @Asako: I saw that when reviewing the annotations. [17:58:58] @Asako: well, I haven't seen the sea pen yet, but I saw the annotation to it! [17:59:43] @Mike I watched all of it and thought it was good but depressing - I much prefer actual squid [18:00:00] @Scott and possible Chrysogorgia and Bathypathes as well after the seapen [18:00:02] Overhanging snout, white lateral line pores, undulating wormlike just above substrate = Ilyophis, probably I. brunneus at this depth and region [18:00:29] @megan <=:€ [18:01:25] So... we have not yet scaled the wall...? [18:01:55] No we havent even gotten to the wall [18:02:10] Got it. [18:02:14] the ROV team is trouble shooting somehting but they havent told me what is wrong? [18:02:20] The ever elusive walls... [18:02:55] jasonchaytor leaves the room [18:03:24] LAT : 24.161461 , LON : -83.05144 , DEPTH : 975.9601 m, TEMP : 5.7797 C, SAL : 34.89562 PSU, DO : 5.03606 mg/l, TURBIDITY : 1.3553 FTU [18:03:57] andreaquattrini leaves the room [18:04:07] Where is the wall?? [18:04:13] christophermah leaves the room [18:04:36] halosaur [18:05:03] salt lizard [18:05:35] ID will have to come from Ken [18:06:01] Halosaur with white mustache is genus Halosaurus, probably H. guentheri [18:07:01] Some gauges in teh bottom have been attributed to feeding by beaked whales [18:07:30] The evidence for that interpretation is not strong [18:07:42] I think that's a warning... [18:07:57] I agree Allen -- shrimp head = successful squid. [18:08:20] Most halosaurs are benthos feeders. The mouth is ventral, under the elongate snout - provided with a dense array of sensory pores. Stomach contents include a lot of sediment ingested with prey [18:08:24] LAT : 24.161591 , LON : -83.051648 , DEPTH : 977.1152 m, TEMP : 5.78067 C, SAL : 34.89472 PSU, DO : 4.98652 mg/l, TURBIDITY : 1.7888 FTU [18:08:31] maybe a prtptilum sp [18:09:31] stephaniefarrington leaves the room [18:11:42] Oh man - did I walk out and miss another sea pen? [18:11:56] Not entirely wrong. While most halosaurs are benthos feeders, Aldrovandia phalacra and A. oleosa (seen mostly a meter or more off bottom, blackish, shorter snouts) have a mixed diet. And the very large dark Halosauropsis macrochir on the lower slope and rise also probably consumes nekton [18:12:11] Cusk eel? [18:12:15] another cusk eel [18:12:20] Ophidiid? [18:12:51] Scott - right on - Ophidiid, genus Monomitopus [18:13:25] LAT : 24.161514 , LON : -83.051683 , DEPTH : 977.0869 m, TEMP : 5.7914 C, SAL : 34.89459 PSU, DO : 5.00742 mg/l, TURBIDITY : 0.9341 FTU [18:15:51] Nymphaster [18:16:08] nymphaster arenatus [18:18:25] LAT : 24.161702 , LON : -83.051785 , DEPTH : 974.5026 m, TEMP : 5.79124 C, SAL : 34.89498 PSU, DO : 4.97911 mg/l, TURBIDITY : 1.1477 FTU [18:19:22] Lots of stuff in the water column... Is that marine snow, or stuff stirred up from bottom by D2? [18:21:36] Regarding the tripodfish seen several times on this dive. That is Bathypterois quadrifilis. It is relatively common based on deep-sea trawling studies. But curiously, this species has rarely been imaged in situ. Today's oblique lateral head-on image is one of the best to my knowledge. This species is a bit unusual. Normally tripods sit absolutely stationary, propped up on their tripod, body fully off-bottom. However, in the few subsea images available, B. quadrifilis is sometimes seen sitting right on the substrate with the long pectorals folded against the body, trailing back to the caudal fin. Perhaps it has a facultative feeding mode, targeting hyperbenthic inverts??? [18:21:45] Mostly snow but D2 has been stirring up sediment from time to time [18:23:26] LAT : 24.161649 , LON : -83.051985 , DEPTH : 976.1591 m, TEMP : 5.7817 C, SAL : 34.89731 PSU, DO : 4.98354 mg/l, TURBIDITY : 1.1783 FTU [18:27:36] stephaniefarrington leaves the room [18:27:43] andreaquattrini leaves the room [18:28:27] LAT : 24.161548 , LON : -83.052077 , DEPTH : 977.1238 m, TEMP : 5.78558 C, SAL : 34.89633 PSU, DO : 4.97634 mg/l, TURBIDITY : 2.094 FTU [18:29:20] Sometime, it would be nice for NOAA to depart from the traditional ship's protocol of 8-5 operations - and do a mission devoted to nighttime ROV dives. At mesophotic depths, some ROV work we did a few decades ago revealed that clouds of hyperbentic amphipods emerge and swarm just over the substrate at night. Do not know if that happens at this depth, but would be worth investigating. There are many fishes that display a disruptive black and white color pattern in the 500-1100 m depth horizon. That corresponds to breaking up the body outline as an anti-predation tactic. So, even though rather few photons get down to 1000 m, nonetheless there are enough to be useful to both predators and prey. That is, a diurnal activity pattern may be anticipated at depth. Hurrah for night dives!! [18:30:53] RV Nautilus does do long dives that go through the nightime hours, but generally too deep for a day/night activity pattern to be evaluated [18:33:27] LAT : 24.161723 , LON : -83.052208 , DEPTH : 977.3344 m, TEMP : 5.78822 C, SAL : 34.89736 PSU, DO : 5.01932 mg/l, TURBIDITY : 2.3565 FTU [18:35:57] NCSM has paratypes of Chaceon fenneri [18:37:03] We are a lot shallower than when we saw the white galatheids. [18:37:47] OPHIOTHOLIA [18:37:51] watch that brittle [18:38:27] LAT : 24.161748 , LON : -83.052155 , DEPTH : 977.25 m, TEMP : 5.78978 C, SAL : 34.8986 PSU, DO : 4.99315 mg/l, TURBIDITY : 2.4054 FTU [18:38:32] @Chris: what is up with the inflated oral disc? [18:39:31] White sea pen to left and past crab, which I know with ophiuroid excitement we won't see... [18:42:46] ugh! [18:42:52] Or carrying it to the squid doctor... [18:43:15] No Dr. gonna help that squid. [18:43:28] LAT : 24.161744 , LON : -83.05236 , DEPTH : 976.5141 m, TEMP : 5.78887 C, SAL : 34.89709 PSU, DO : 4.99804 mg/l, TURBIDITY : 2.7839 FTU [18:43:31] hahaha [18:43:32] Got to sign off. Good dive for fishes and mobile megafauna - not so good for hard-botom loving corals [18:43:36] poor squid [18:43:39] The crab doesn't know that yet. [18:44:05] kensulak leaves the room [18:47:31] emilycrum leaves the room [18:48:28] LAT : 24.161851 , LON : -83.052374 , DEPTH : 978.5091 m, TEMP : 5.78579 C, SAL : 34.89647 PSU, DO : 4.97651 mg/l, TURBIDITY : 1.337 FTU [18:49:11] the other one had the big dorsal spine as well. [18:50:02] Watch out for that caridoid response! Squat lobsters can dart away quickly! [18:50:24] I'm trying to look it up... [18:50:40] send Martha Zizinski a frame grab [18:50:48] Nizinski [18:50:56] Munidopsis tridentata [18:51:15] three-toothed squat lobster... [18:51:30] At least, it looks like this: https://oceanexplorer.noaa.gov/explorations/03mex/logs/sept25/media/dsc_0055.html [18:52:00] Stick with just the genus name. [18:52:08] I predict it bolts. [18:52:12] Backwards. [18:52:15] Fast. [18:52:29] I have seen others with that dorsal spine that were solid red/orange. [18:52:44] That is good advice Stephanie! [18:53:16] If they aren't clinging to corals or sponges, they are very hard to collect. [18:53:28] LAT : 24.161877 , LON : -83.052377 , DEPTH : 977.6133 m, TEMP : 5.78639 C, SAL : 34.8963 PSU, DO : 4.98451 mg/l, TURBIDITY : 1.2088 FTU [18:53:46] allencollins leaves the room [18:54:25] need a trawl [18:54:56] My good advice comment referred to Stephanie's suggestion to get them from behind. But, as you see, they are very mobile. [18:55:11] christophermah leaves the room [18:56:00] Anyhow, I don't think this is something that is unknown out here. The mobile fauna on soft sediments have been well trawled. [18:56:10] squid smarter than ROV [18:56:18] Chris, that ophio just sat down right in front of the galetheoid, replay shows. Funny. [18:56:26] But, of course, we need a Martha or Mary W to confirm that! [18:56:32] Thanks Scott. Good point. [18:57:18] kelseyviator leaves the room [18:57:31] stephaniefarrington leaves the room [18:58:09] Allen.. yes. Been watching a clip. It vanished afterwards. no worries. maybe it will come up again.. [18:58:24] here's a specimen pic https://twitter.com/echinoblog/status/1005018948859883521/photo/1 [18:58:29] LAT : 24.161961 , LON : -83.052452 , DEPTH : 976.7621 m, TEMP : 5.80034 C, SAL : 34.89185 PSU, DO : 4.96379 mg/l, TURBIDITY : 1.8437 FTU [18:58:31] jasonchaytor leaves the room [18:59:01] Interested to see if Illex shows up in eDNA [18:59:27] @Chris: that oph looks to be imitating an octopus, although clearly it cannot count [legs] [18:59:43] @Chris: I mean the image in your blog. [18:59:48] When feeding at the surface, squids hang out at the edge f teh light pool. [19:02:13] cusk eel [19:02:53] there's a few ophs with multiple arms.. [19:03:02] Still not convinced that was a sea pen... [19:03:22] But more likely that is wishful thinking [19:03:29] LAT : 24.161983 , LON : -83.052587 , DEPTH : 976.7917 m, TEMP : 5.78342 C, SAL : 34.89693 PSU, DO : 5.02223 mg/l, TURBIDITY : 1.1783 FTU [19:03:34] Interesting Scoot. If not, then I wonder what it was attached to. [19:04:07] There are some bamboo corals that root in the sediment, including the type of the genus Lepidisis, L. caryophyllia. [19:04:25] Thier holdfast is elongated into a root-like structure. [19:04:51] They are tasty too [19:05:15] stevenauscavitch leaves the room [19:06:43] stephaniefarrington leaves the room [19:08:18] Gee Mike,when did you get a chance to eat Lepidisis? [19:08:29] LAT : 24.162065 , LON : -83.052814 , DEPTH : 974.9764 m, TEMP : 5.78439 C, SAL : 34.89579 PSU, DO : 5.00687 mg/l, TURBIDITY : 3.4554 FTU [19:10:32] squid ink [19:10:47] rolandbrian leaves the room [19:13:30] LAT : 24.162218 , LON : -83.052763 , DEPTH : 976.3972 m, TEMP : 5.79382 C, SAL : 34.89554 PSU, DO : 5.02279 mg/l, TURBIDITY : 1.5568 FTU [19:14:02] johnreed leaves the room: Replaced by new connection [19:17:55] holothurian swimming [19:18:13] christophermah leaves the room [19:18:31] LAT : 24.162299 , LON : -83.052856 , DEPTH : 968.5361 m, TEMP : 5.77124 C, SAL : 34.89669 PSU, DO : 5.00526 mg/l, TURBIDITY : 1.2454 FTU [19:19:22] not me [19:19:52] Sediment coming down the left sediment chute [19:21:39] johnreed leaves the room [19:22:51] halosaur [19:23:11] Isn't this near the enterence to the Straits of Florida, so a large amount of current moving through can quickly errode softer sediments. [19:23:31] LAT : 24.162341 , LON : -83.052877 , DEPTH : 964.459 m, TEMP : 5.77286 C, SAL : 34.89842 PSU, DO : 4.9968 mg/l, TURBIDITY : 0.9707 FTU [19:25:14] cusk eels [19:26:33] does anyone remember how big that first Bathynomus was? [19:26:37] I'm in a meeting, so distracted. But agree this is a Chrysogorgia [19:26:53] @meganmcculler they said 15-20 cm [19:27:40] @Chris great, thanks! I missed the lasers [19:28:17] and someone on twitter is asking how big it was haha [19:28:33] LAT : 24.162226 , LON : -83.053137 , DEPTH : 961.222 m, TEMP : 5.77043 C, SAL : 34.90144 PSU, DO : 4.97346 mg/l, TURBIDITY : 0.9707 FTU [19:29:44] myctophid [19:30:23] looks like it rammed its head into the mud [19:30:39] bentho-pelagic coupling [19:33:31] hannahmiller leaves the room [19:33:33] LAT : 24.162346 , LON : -83.053019 , DEPTH : 959.0602 m, TEMP : 5.79684 C, SAL : 34.89918 PSU, DO : 5.01509 mg/l, TURBIDITY : 1.0073 FTU [19:34:14] Opisthoteuthis [19:34:20] cirrate octopod [19:34:32] DUMBO!! [19:36:13] I step out and come back to this lovely sight! [19:38:33] LAT : 24.162381 , LON : -83.052993 , DEPTH : 957.8126 m, TEMP : 5.79011 C, SAL : 34.89688 PSU, DO : 4.98457 mg/l, TURBIDITY : 1.0256 FTU [19:40:31] stephaniefarrington leaves the room [19:40:57] Tripod fish [19:41:51] nice work allen! [19:41:56] yup you got it [19:42:06] isopod on pelvic [19:42:48] Ophiuroid to the right of the tripod fish. Really tiny and no "hershey's kiss" hat. [19:43:34] LAT : 24.162429 , LON : -83.053088 , DEPTH : 952.8589 m, TEMP : 5.80783 C, SAL : 34.90206 PSU, DO : 4.98011 mg/l, TURBIDITY : 1.0256 FTU [19:43:40] johnreed leaves the room [19:45:10] looks like there might be a bryozoan [19:45:24] emilycrum leaves the room [19:46:20] I need both Cris's help for the blue demosponge! [19:48:25] Max I would go for Poecilosclerida [19:48:33] BRYOZOAN [19:48:35] LAT : 24.162404 , LON : -83.05307 , DEPTH : 951.4953 m, TEMP : 5.82152 C, SAL : 34.90132 PSU, DO : 4.9457 mg/l, TURBIDITY : 1.0989 FTU [19:48:37] haha [19:48:41] andreaquattrini leaves the room [19:49:01] can we get another look at the bryo? [19:49:09] Lace bryozoan... We collected one in 2017 from not far from here. [19:49:13] specially bc of the channels... but blue! wow [19:49:22] And I think a bamboo coral behind it. [19:49:46] Collect requests????? [19:49:51] Community? [19:49:55] To my knowledge, OKEX has never collected one of the blue sponges since I've been involved since ~~2017. [19:49:55] elizabethfraser leaves the room [19:50:01] adamskarke leaves the room [19:50:59] @Allen I don't think its a priority, but I myself wouldn't be opposed to one. [19:51:04] please, Allen! [19:51:53] ^^ [19:51:58] Definitely a larger one with the full complexity of oscula. [19:52:19] ^^^Would be preferable [19:52:41] jasonchaytor leaves the room [19:53:11] johnreed leaves the room [19:53:27] Someone leaving :) [19:53:35] LAT : 24.162509 , LON : -83.053045 , DEPTH : 948.2837 m, TEMP : 5.82103 C, SAL : 34.89881 PSU, DO : 4.97033 mg/l, TURBIDITY : 0.9341 FTU [19:54:07] brach [19:54:38] @Bob Brachiopod on the rock or in the sediment? [19:54:47] cristianacastellobranco leaves the room [19:54:57] All the bamboo coral s are "fancy-schmancy", so you can't ask me that! [19:55:33] Show us your lophophore please! [19:56:13] But I understand you are asking if it is a collectible. I should know if we have collected any from around here before, but I don't! [19:57:52] one of the region in Japan, people commonly eat kind of Brachiopod (Lingulidae) ) [19:58:08] Tammy Horton on twitter said the parasite on that tripod fish looks more like an amphipod, possibly in the genus Trischizostoma [19:58:25] Awesome! [19:58:35] LAT : 24.16254 , LON : -83.053033 , DEPTH : 947.2672 m, TEMP : 5.81252 C, SAL : 34.89962 PSU, DO : 4.95748 mg/l, TURBIDITY : 1.8193 FTU [19:59:27] cristianacastellobranco leaves the room: Replaced by new connection [20:03:00] is this stuck? [20:03:36] LAT : 24.162588 , LON : -83.053054 , DEPTH : 940.2365 m, TEMP : 5.81365 C, SAL : 34.90188 PSU, DO : 4.97568 mg/l, TURBIDITY : 1.0562 FTU [20:03:43] more bryos [20:04:28] Scrawny looking Bathypathes [20:05:36] stephaniefarrington leaves the room [20:07:16] Mary was just describing the chirostylid squat lobster on the phone, but I didn't hear her on the video, so I think the call may have been disconnected... [20:08:02] Allen: can you verify with video that the ship is still on the call? [20:08:36] LAT : 24.162602 , LON : -83.053124 , DEPTH : 932.5231 m, TEMP : 5.82281 C, SAL : 34.90083 PSU, DO : 4.95468 mg/l, TURBIDITY : 1.0501 FTU [20:08:54] Tina Molodtosova says that the black coral is bathypathes or Telopathes. [20:09:06] Thanks Asako [20:09:12] I couldn't tell, but that last zoom may have been on an Acanella. [20:09:30] christophermah leaves the room [20:09:36] jasonchaytor leaves the room [20:10:43] Not close enough to the white colony to ID... [20:11:02] Got it Scott. Sorry. [20:11:23] I am still not hearing from ship on the teklecon, so I'll hangup and call in again to see if that makes a difference. [20:13:10] when we will off bottom? [20:13:16] I have verified that you are NOT on the telecon. [20:13:22] Just Mary and I on the phone. [20:13:37] LAT : 24.162627 , LON : -83.053158 , DEPTH : 930.7618 m, TEMP : 5.8276 C, SAL : 34.90098 PSU, DO : 4.96264 mg/l, TURBIDITY : 0.9646 FTU [20:13:43] We have about 45 more minutes [20:13:50] Bamboo coral. [20:13:59] Thanks @Allen! [20:14:02] Likely J calde. [20:14:26] Can you acknowledge that you are seeing my comments that Okeanos is no longer on the telecon line... [20:15:02] sea cucumber [20:15:19] OK, Sorry Scott. [20:15:27] Teleconference off. We will fix [20:15:33] Thanks - been trying to get your attention for some time! [20:15:42] there's a cuke that has collecting behavior [20:16:20] I saw note, but didn;t interpret it correctly. [20:16:31] 30 minutes left on bottom. [20:16:55] @Allen: my bad. I should have been explicit and typed "Okeanos has been dropped from the telecon" [20:17:31] If this is a chrysogorgia with a small pink chirostylid, mary has been saying this would be a great collection targetr. [20:18:09] I lost sight of it while typing! [20:18:38] LAT : 24.162598 , LON : -83.053172 , DEPTH : 924.4346 m, TEMP : 5.82949 C, SAL : 34.89999 PSU, DO : 4.96369 mg/l, TURBIDITY : 0.9768 FTU [20:19:10] Paramuricea or Acanthogorgia...? Yellow colony above your blue sponge. [20:19:45] I think this blue sponge would be fine, if you wanted to collect a bunch at once. [20:20:04] Conference call reconnected [20:20:07] that earlier sea cucumber with the stuff is Oloughlinius ..described here as Meseres https://nmnh.typepad.com/no_bones/2013/02/beauty-and-the-beast-a-sea-cucumber-improves-its-image-by-picking-up-some-bling.html [20:20:42] Thanks Echinoblog! [20:22:18] happy to help! [20:23:11] Not requesting collection - just an image so we can ID it. [20:23:17] Yay. Hopefully we get this blue sponge. [20:23:39] LAT : 24.162691 , LON : -83.053143 , DEPTH : 922.9857 m, TEMP : 5.82857 C, SAL : 34.89957 PSU, DO : 4.93039 mg/l, TURBIDITY : 0.9829 FTU [20:23:43] I expect that substrate to be pretty friable. Easy broken away. [20:23:44] Would be nice, but not a high priority. [20:23:53] On another call, good luck [20:25:05] yes!! [20:25:10] amphinomids are venomous.. polynoids should be okay. [20:25:13] Tjhat was even more friable than I expected! [20:25:17] great! [20:25:20] is that a bryozoan just above where the sponge is? [20:25:26] was* [20:25:35] Sponge people are happy! Keep on collecting things! [20:25:42] @Megan: the yellow thing is an octocoral. Is that what you are looking at? [20:26:14] @Scott it's small white branching below the yellow coral but above the sponge [20:26:26] allencollins leaves the room [20:26:42] I didn't get a good enough look at it [20:27:14] @Megan: we are about to go in for another zoom, so stand by! [20:28:06] @Scott cool! I'm attempting to work while watching and it's not going well. I need more monitors... [20:28:17] @Megan: ditto! [20:28:39] LAT : 24.162715 , LON : -83.053096 , DEPTH : 921.9016 m, TEMP : 5.83606 C, SAL : 34.9043 PSU, DO : 4.95971 mg/l, TURBIDITY : 0.9829 FTU [20:29:32] stephaniefarrington leaves the room [20:29:39] Acanthogorgiidae is my best guess. [20:29:41] it also reminds me Placogorgia [20:30:11]