[12:07:59] EX2107_DIVE08 Test message [12:21:40] iscwatch leaves the room: Replaced by new connection [12:28:28] Good morning folks. ROV deployment delayed about 30 minutes, until 9:30. [12:33:03] allencollins leaves the room [12:57:31] allencollins leaves the room [13:00:45] Just in from Matt D: Our dive today will be slightly delayed to an issue with our dynamic positioning system. While hard to predict, we hope to be getting into the water around 1000. [13:04:54] the call we be delayed until after were in the water too. so stay tuned. [13:04:57] allencollins leaves the room [13:13:33] stephaniefarrington leaves the room: Replaced by new connection [13:13:54] Yep, we'll keep you posted. [13:17:26] allencollins leaves the room [13:25:45] 15 minutes until deployment. We will have pre-dive call 15 minutes after that. [13:31:53] allencollins leaves the room [13:36:02] allencollins leaves the room [13:48:35] EX2107_DIVE08 ROV Launch [13:54:59] allencollins leaves the room [13:55:51] EX2107_DIVE08 ROV on Surface [14:00:05] EX2107_DIVE08 ROV Descending [14:01:23] LAT : 28.915454 , LON : -77.020464 , DEPTH : 24.3937 m, TEMP : 26.7505 C, SAL : 36.52473 PSU, DO : 6.59645 mg/l, TURBIDITY : 0.6654 FTU [14:06:24] LAT : 28.915924 , LON : -77.020512 , DEPTH : 54.194 m, TEMP : 26.75844 C, SAL : 36.5239 PSU, DO : 6.59189 mg/l, TURBIDITY : 0.7448 FTU [14:08:59] Will miss pre-dive call as I must commute to campus. See you in the sinkhole! [14:09:38] Great. See you then Scott [14:11:13] allencollins leaves the room [14:11:25] LAT : 28.916118 , LON : -77.020866 , DEPTH : 169.2673 m, TEMP : 21.09861 C, SAL : 36.82113 PSU, DO : 6.17986 mg/l, TURBIDITY : 0.8181 FTU [14:13:03] Adam, do you want to call in today? Comment on the geology? [14:16:14] scottfrance leaves the room [14:16:25] LAT : 28.916194 , LON : -77.0211 , DEPTH : 314.6396 m, TEMP : 16.0925 C, SAL : 36.17933 PSU, DO : 5.37733 mg/l, TURBIDITY : 0.8791 FTU [14:16:49] stephaniefarrington leaves the room [14:20:37] calling in momentairly [14:21:25] LAT : 28.916244 , LON : -77.021261 , DEPTH : 464.7868 m, TEMP : 13.39221 C, SAL : 35.74249 PSU, DO : 4.64314 mg/l, TURBIDITY : 0.8852 FTU [14:24:30] Are there salt domes beneather the Blake Pl? [14:24:45] The salt domes are beneath the inner part of the Blake Plateau [14:25:07] The line of salt diapirs all but stop around teh Blake Ridge cold seeps that we drilled during ODP Leg 164 [14:25:40] Note that the South Atlantic Bight has historically been an area of substantial SGD (submarine groundwater discharge), but that is closer to shore than this, plus the head is no longer as high onshore to drive that SGD. [14:26:26] LAT : 28.916247 , LON : -77.021184 , DEPTH : 616.704 m, TEMP : 10.23693 C, SAL : 35.33995 PSU, DO : 4.72893 mg/l, TURBIDITY : 0.8791 FTU [14:26:44] emilycrum leaves the room [14:27:02] Dissociation of gas hydrate, which is present beneath much of the Blake Plateau (a classic province for gas hydrates), releases freshwater (saline water is basically excluded when hydrate forms, just as in ice). Episodes of hydrate dissociation could potentially release substantial freshwater, but we don't right now have much evidence that this could have happened at such profound water depths. [14:28:09] Excellent point Carolyn [14:29:11] @michaelvecchione The Blake Ridge seeps drilled on ODP Leg 164 (Site 996) sit on top of a salt diapir that disrupts the gas hydrate stability zone at depth. Those seeps were the site of dives Cindy, I, and others did in 2001 with Alvin and then the first ever Windows to the Deep expedition (I should have trademarked that!!!) that I led with Cindy in 2003...then there were dives a few years ago, I think as part of DeepSearch [14:29:55] We published imagery that shows a 3D subseafloor conduit system feeding the Blake Ridge seeps above the buried diapir in a paper led by Matt Hornbach in 2007... [14:31:27] LAT : 28.916404 , LON : -77.021236 , DEPTH : 771.1819 m, TEMP : 7.38333 C, SAL : 35.13346 PSU, DO : 5.61905 mg/l, TURBIDITY : 0.8791 FTU [14:31:43] Thanks Carolyn and Adam for the helpful perspective this morning. [14:34:05] allencollins leaves the room [14:36:28] LAT : 28.916622 , LON : -77.021431 , DEPTH : 929.1782 m, TEMP : 5.62482 C, SAL : 35.08456 PSU, DO : 7.1552 mg/l, TURBIDITY : 0.873 FTU [14:41:28] LAT : 28.916944 , LON : -77.021504 , DEPTH : 1088.8468 m, TEMP : 4.61916 C, SAL : 35.01826 PSU, DO : 7.89704 mg/l, TURBIDITY : 0.8852 FTU [14:44:20] 35 m to bottom. at 1173 [14:45:38] so the feed we are seeing is pitch black...are they still [14:45:43] adjusting something? [14:46:07] elizabethfraser leaves the room [14:46:12] Not sure Carolyn. I think they are lining up to drop to bottom [14:46:28] LAT : 28.917002 , LON : -77.021496 , DEPTH : 1187.3536 m, TEMP : 4.37991 C, SAL : 35.00259 PSU, DO : 8.1516 mg/l, TURBIDITY : 1.0806 FTU [14:46:33] @Carolyn: camera 3 is a good one to follow dyuring descent. You can get more info and hear the pilots for context. [14:46:42] Unless you want to see the mid-water critters! [14:46:45] @scottfrance...yes i was [14:46:55] @scottfrance can't see anything mid-water! [14:47:30] @Carolyn: sorry about that! [14:48:53] Lights adjusting a bit on D2 [14:50:09] hours ahead of where we were yesterday! [14:51:06] EX2107_DIVE08 ROV on Bottom [14:51:28] LAT : 28.916977 , LON : -77.021186 , DEPTH : 1204.5692 m, TEMP : 4.38916 C, SAL : 35.00088 PSU, DO : 8.13899 mg/l, TURBIDITY : 0.9646 FTU [14:51:31] zoom on fish? [14:51:54] stephaniefarrington leaves the room [14:53:32] Maybe that is what created the crater... Really strong soccer corner kick? [14:53:50] Russians have a volleyball court on Keyldish, [14:54:30] clearly some real current down here given the ripples...interesting [14:54:32] never thought of using soccer balls as site markers...works pretty well [14:54:46] The rare deepsea football fish [14:55:22] What are the black lines? Seagrass debris? [14:55:46] Glad to see that the oxygen levels are relatively normal here. [14:55:52] (football fish = Himantolophidae) [14:56:08] the morphology of ripples is a function of both the current speed and direction, so different morphologies don't specifically mean different directions [14:56:23] allencollins leaves the room [14:56:28] LAT : 28.916887 , LON : -77.021202 , DEPTH : 1203.9138 m, TEMP : 4.38332 C, SAL : 35.00379 PSU, DO : 8.11167 mg/l, TURBIDITY : 1.044 FTU [14:56:37] yes those are carbonates [14:56:44] @Mike I was referring to the soccerball! Not real fish! :) [14:56:55] Carbonate Platform debris [14:57:53] these fell from the walls [14:57:58] I know, just going along with it. [14:58:20] AaronMicallef leaves the room [14:58:36] @Mike XD [14:58:48] Good morning everyone! [14:58:52] Is the black patch in front of rocks a cerianthid, or more loose algal debris? [14:59:06] Good morning @Cris! [14:59:32] Looks like currents have scoured sediment around rocks [15:00:53] Cyclothone [15:01:01] Hello [15:01:29] LAT : 28.916856 , LON : -77.021208 , DEPTH : 1203.4376 m, TEMP : 4.3831 C, SAL : 35.01488 PSU, DO : 8.1288 mg/l, TURBIDITY : 1.0684 FTU [15:02:15] Hi @Asako! [15:02:24] Hi @Nolan! [15:03:48] a fresher piece (i.e., something not as heavily bioeroded) would be better [15:03:51] stephaniefarrington leaves the room [15:04:12] allencollins leaves the room [15:04:29] so Sci Leads...if they are goign to sample here, go for the whiter pieces, not the ones that look more "grungy" [15:06:08] elizabethfraser leaves the room [15:06:29] LAT : 28.916834 , LON : -77.02125 , DEPTH : 1205.1349 m, TEMP : 4.38057 C, SAL : 35.00222 PSU, DO : 8.10871 mg/l, TURBIDITY : 1.0623 FTU [15:06:42] i think the one they are on is probably the best they will get..Jason/Adam do you see something better ? [15:07:07] should be able to break a piece of where it is heavily fractured [15:07:32] Scott--see what Jason pointed out? [15:09:02] Didn't hear what pilot said (they are not on telecon or camera 1) - but I'm interpretuing from your reaction they don't want to break rock...? Is that correct? [15:09:12] Sorry for missing those comments as they came in. Autoscroll on, but doesn't seem to advance eveyr time [15:09:28] ditto Scott....I didn't hear, but that is what I inferred too [15:09:39] Jason is on another call, which is why he can't call in right now. [15:09:44] whats that soccer ball [15:10:01] @Asako: it is...a soccer ball! :-) [15:10:05] @Asako A rare deepsea football fish! [15:10:18] It is a global game, after all. [15:10:37] go for it on rock...seems good Thanks for trying [15:10:39] Thank you all! :-[ [15:11:11] mariadiaz leaves the room [15:11:16] meganmcculler leaves the room [15:11:30] LAT : 28.916843 , LON : -77.021176 , DEPTH : 1205.1082 m, TEMP : 4.38889 C, SAL : 35.0009 PSU, DO : 8.12264 mg/l, TURBIDITY : 1.0745 FTU [15:11:36] Almost first thing we see is human debris. Sadly [15:12:46] Hope this looks like an okay choice. Pilots don't want to break rocks, although nudging to see if loose is ok [15:12:57] we saw black plastics on Metallogorgia two days ago? [15:13:04] Looks okay [15:13:09] @allencollins Seems fine thanks...don't want to spend a huge amount of time on this [15:13:23] When we see more outcrops, we can look for another [15:14:05] yeah, let's hope you see an outcrop...this probably isn't one? but still interesting of course [15:15:00] what are the meshes on the suction? too coarse and you will miss a lot of the size fractions [15:15:56] Argonaut eggcase [15:16:30] LAT : 28.916833 , LON : -77.021184 , DEPTH : 1205.2642 m, TEMP : 4.38872 C, SAL : 35.02216 PSU, DO : 8.09613 mg/l, TURBIDITY : 1.1294 FTU [15:17:15] stephaniefarrington leaves the room [15:18:01] allencollins leaves the room [15:20:23] emilycrum leaves the room [15:20:57] There is a sipunculid that (as far as I know) has only been reported from pteropod shells. [15:21:30] LAT : 28.916819 , LON : -77.021156 , DEPTH : 1205.5241 m, TEMP : 4.38249 C, SAL : 35.0028 PSU, DO : 8.14407 mg/l, TURBIDITY : 1.0623 FTU [15:23:54] allencollins leaves the room [15:25:43] Looks completely stripped of living tissue [15:25:49] cindyvandover leaves the room [15:26:31] LAT : 28.916774 , LON : -77.021136 , DEPTH : 1204.7721 m, TEMP : 4.38426 C, SAL : 35.00155 PSU, DO : 8.14937 mg/l, TURBIDITY : 1.0317 FTU [15:27:24] My view was not great. Are we sure that was an anemone on the pagurid and not a zoanthid (which have the same sort of association) [15:27:51] carolynruppel leaves the room [15:28:05] I am not sure, but thanks for that. [15:30:31] Good morning ! [15:30:36] pteropods come in both round and spiky [15:30:37] Here is a good example of the pagurid-zoanthid symbiosis. Obviously more cooperative and extended! https://www.ncei.noaa.gov/waf/okeanos-animal-guide/Paguroidea021.html [15:31:21] there are may pteropod genera among the shells in the sediment here. [15:31:25] christophermah leaves the room [15:31:29] @Cris 2 Good morning! [15:31:33] LAT : 28.916709 , LON : -77.021205 , DEPTH : 1200.6825 m, TEMP : 4.39362 C, SAL : 35.00093 PSU, DO : 8.0989 mg/l, TURBIDITY : 1.044 FTU [15:32:24] Good morning Cris! [15:32:58] I don't recall if they are blind, but they do have very small eyes. [15:33:02] Bathypterois (grallator?) [15:33:24] At thuis depth those sensory fins would be more useful than vision, I'm sure. [15:34:08] Clione limacina no shell after larval stage [15:34:42] You should tell people it is effectively a pelagic snail witht a shell. [15:34:50] *without a shell [15:34:52] Pteropods , arent Molusc? [15:35:06] they are molluscs [15:35:10] Yes [15:36:29] Note thath for the general audience, no one has yet said this is a Mollusc, a pelagic snail. [15:36:33] LAT : 28.916624 , LON : -77.02126 , DEPTH : 1196.5525 m, TEMP : 4.38552 C, SAL : 35.00266 PSU, DO : 8.12557 mg/l, TURBIDITY : 1.4103 FTU [15:38:16] but the angel can eat same size of prey as itself. [15:40:39] Based on the animal guide, I am going to guess the cusk eel (Ophidiidae) was Dicrolene sp. [15:40:41] allencollins leaves the room [15:41:21] See any rock sample potentials while getting this water sample? [15:41:32] LAT : 28.916512 , LON : -77.021143 , DEPTH : 1191.7153 m, TEMP : 4.41119 C, SAL : 34.98353 PSU, DO : 8.13177 mg/l, TURBIDITY : 1.1538 FTU [15:42:01] there is a lot of displaced material, very hard to know where it came from [15:42:21] mariadiaz leaves the room [15:43:38] if the room for rocks is limited, I would suggest waiting until further up where you can limit the potential source locations [15:44:24] Plenty of room for another Jason [15:44:39] please don't mix [15:44:58] if they are friable, then you will get a lot of broken pieces [15:45:08] When we finish the collection, could we zoom back on might have been a Cladorhizid please? It also looked to me like an urchin. [15:46:01] Quick pilot change for this collection. [15:46:18] Thank you! [15:46:20] KevinRademacher leaves the room [15:46:33] LAT : 28.916484 , LON : -77.02122 , DEPTH : 1192.9522 m, TEMP : 4.38255 C, SAL : 35.00268 PSU, DO : 8.14406 mg/l, TURBIDITY : 0.9768 FTU [15:47:14] hannahmiller leaves the room [15:47:50] The next beep you hear will be me hanging up as I must go to class! [15:48:19] I tried to warn you! :-) [15:48:52] Potntial clad/urchin was to the right, correct Nolan? [15:49:03] You did Scott. Thanks [15:50:04] @Allen Yes, I think so. It was off-white and it had more spines laying flat then standing up.\ [15:50:51] stephaniefarrington leaves the room [15:51:34] LAT : 28.916475 , LON : -77.021212 , DEPTH : 1193.398 m, TEMP : 4.38453 C, SAL : 35.00249 PSU, DO : 8.09391 mg/l, TURBIDITY : 1.0745 FTU [15:51:43] allencollins leaves the room [15:53:20] Thats it! [15:53:51] weird [15:53:55] Collect? [15:53:57] yes.. urchin.. not sure who [15:54:01] yes!!! [15:54:05] Almost looks like a benthic jelly to me [15:54:08] we saew one the other day [15:54:18] Gotta go. Have fun. [15:54:25] nice [15:54:31] Considered that medusa, but I think not. But maybe. rough view. [15:56:08] it might be one of the irregulars.. but many are very fragile..and sometimes the living ones are not easily recognizable [15:56:13] It sort of looks like Habrocidaris based on the animal guide. [15:56:34] LAT : 28.91648 , LON : -77.021225 , DEPTH : 1192.2192 m, TEMP : 4.38233 C, SAL : 35.00282 PSU, DO : 8.0915 mg/l, TURBIDITY : 0.9768 FTU [16:00:32] @NolanBarrett yes..as good a guess as any.. I don't know that we've ever collected one! [16:01:32] jasonchaytor leaves the room [16:01:34] just checked the NMNH data we've never gotten one. It will be good to check the ID guide with this. [16:01:36] LAT : 28.916487 , LON : -77.021252 , DEPTH : 1191.9264 m, TEMP : 4.39858 C, SAL : 34.99927 PSU, DO : 8.10235 mg/l, TURBIDITY : 1.0134 FTU [16:01:41] thank you [16:01:45] It's the little things! The itty bitty things. It's the little things, that make me psyched. [16:02:10] Welcome! Whether it was a sponge or an urchin, I was excited when we first spotted it. [16:03:53] gordonrees leaves the room [16:05:27] Another awesome collection, thank you ROV team! [16:05:35] Habrocidaris [16:06:36] LAT : 28.916514 , LON : -77.021224 , DEPTH : 1191.9043 m, TEMP : 4.38855 C, SAL : 35.00218 PSU, DO : 8.09123 mg/l, TURBIDITY : 1.0134 FTU [16:09:23] asakomatsumoto leaves the room: Replaced by new connection [16:11:36] LAT : 28.916502 , LON : -77.02119 , DEPTH : 1190.5957 m, TEMP : 4.38586 C, SAL : 35.00212 PSU, DO : 8.08255 mg/l, TURBIDITY : 1.0562 FTU [16:14:15] I think the eel-like fish may not be a cut-throat. Maybe a Halosaur instead. [16:14:36] carolynruppel leaves the room: Replaced by new connection [16:15:37] yes. shark [16:16:37] LAT : 28.916427 , LON : -77.021323 , DEPTH : 1178.0471 m, TEMP : 4.38696 C, SAL : 35.00158 PSU, DO : 8.10419 mg/l, TURBIDITY : 1.1172 FTU [16:18:47] I think the shark was a catshark, Apristurus sp. [16:19:45] don't BBQ at the beach! [16:21:38] LAT : 28.916453 , LON : -77.02137 , DEPTH : 1176.7708 m, TEMP : 4.40403 C, SAL : 34.99389 PSU, DO : 8.10732 mg/l, TURBIDITY : 1.0256 FTU [16:21:40] @Mike Yeah, that genus looks very similar. The nares on that shark were quite large. [16:22:12] stephaniefarrington leaves the room [16:22:24] jasonchaytor leaves the room [16:23:23] emilycrum leaves the room [16:24:22] Indeed, Allen! [16:24:26] Wow!. It has the color tone of Hertwigia [16:25:15] Yes the thick plate is a Demospongiae [16:25:42] cutthroat eel [16:25:43] Cut throat eel in the back [16:26:38] LAT : 28.91645 , LON : -77.021369 , DEPTH : 1178.8791 m, TEMP : 4.40299 C, SAL : 35.03167 PSU, DO : 8.17205 mg/l, TURBIDITY : 1.0745 FTU [16:28:31] one of the black coral is Parantipathes [16:28:40] Tina Molodtsova ids [16:29:32] I think this was Primnoid coral [16:31:09] mariadiaz leaves the room [16:31:39] LAT : 28.916427 , LON : -77.021358 , DEPTH : 1171.0071 m, TEMP : 4.38222 C, SAL : 35.00336 PSU, DO : 8.12947 mg/l, TURBIDITY : 0.9707 FTU [16:32:41] cindyvandover leaves the room [16:34:52] stephaniefarrington leaves the room [16:36:40] LAT : 28.916316 , LON : -77.02122 , DEPTH : 1170.3549 m, TEMP : 4.3815 C, SAL : 35.00308 PSU, DO : 8.11117 mg/l, TURBIDITY : 1.0379 FTU [16:37:49] Ship moving. Can't get closer at this time [16:38:35] Bamboo and Primnoid on top [16:38:49] jasonchaytor leaves the room [16:40:02] carolynruppel leaves the room [16:41:40] LAT : 28.916287 , LON : -77.021218 , DEPTH : 1170.6176 m, TEMP : 4.38597 C, SAL : 35.00633 PSU, DO : 8.11854 mg/l, TURBIDITY : 1.0317 FTU [16:42:24] Demosponge [16:43:29] katherinebemis leaves the room [16:44:27] carolynruppel leaves the room: Replaced by new connection [16:45:50] gordonrees leaves the room [16:46:40] LAT : 28.916254 , LON : -77.021137 , DEPTH : 1169.0432 m, TEMP : 4.38029 C, SAL : 35.00282 PSU, DO : 8.11516 mg/l, TURBIDITY : 1.0073 FTU [16:47:03] What a black beauty!! maybe Asteropus? definitively an Astrophorid [16:48:07] primnoid [16:48:11] Another instance of bamboo right next to primnoid [16:48:22] Hi Tina [16:48:53] Is it just favorable habitat or what? They don't appear to be competing. [16:48:54] and below may be something else [16:49:27] Hi all, I am for few minutes only, if in oine hour still the dive? [16:49:58] Plan is for another 2+hours, but we have weather moving in [16:50:48] thanks! [16:51:34] Really? This is what I come back to find? [16:51:41] LAT : 28.91619 , LON : -77.021069 , DEPTH : 1163.3716 m, TEMP : 4.3831 C, SAL : 35.00309 PSU, DO : 8.11269 mg/l, TURBIDITY : 0.9951 FTU [16:51:52] I mean the trash... [16:52:07] how far we from the shore? [16:52:22] 186 miles from shore [16:52:28] @Cris It looked like a grey-green Latruculidae and a Desmacellidae encrusting. [16:52:55] Istolonifera-lookish [16:53:05] stolonifera. [16:53:08] we already saw 3 type of trash today [16:53:09] mariadiaz leaves the room [16:53:16] Cathy likes this things, Andrea too [16:53:40] suggest collection&) [16:53:48] stephaniefarrington leaves the room [16:53:58] Tina, which one? [16:54:25] starfish lower left [16:54:31] little white goniasterid I think [16:54:36] Allen. Stalk with octos for Andrea., sorry, have to run, will try to join [16:54:53] katherinebemis leaves the room [16:55:46] tinamolodtsova leaves the room [16:55:52] @Scott Twice today while you are teaching we saw a Primnoid right next to a Bamboo. Like really close. But they didn't seem to be harming each other. Have you seen this before? [16:56:10] @Nolan: not sure. Hope we see it again. [16:56:20] Or I'll "review the tape" later [16:56:42] LAT : 28.916187 , LON : -77.021144 , DEPTH : 1163.589 m, TEMP : 4.39423 C, SAL : 35.00404 PSU, DO : 8.12703 mg/l, TURBIDITY : 1.0256 FTU [16:56:47] Little Latruncula sponge right next to encrusting sponge. [16:57:01] It is beautiful [16:57:35] Not precise patterns. There are some like Poecilosclerids that have commonly those canals [17:00:22] Use Cornulariidae for name [17:00:57] Which someone will later point out to me is a misID!! [17:01:13] Not sure what the stalk is... [17:01:23] I wasn't paying attention to that on gthe zoom! [17:01:42] LAT : 28.916203 , LON : -77.02111 , DEPTH : 1163.2409 m, TEMP : 4.37963 C, SAL : 35.00401 PSU, DO : 8.10031 mg/l, TURBIDITY : 1.1722 FTU [17:02:49] One of the [many] reasons this is a good collection is that they are often overlooked (they are basically stoloniferous ribbons overgrowing other hard stuff), so when we have good in situ imnagery and the ability to collect, it is valuable. [17:03:08] mariadiaz leaves the room [17:03:11] When they are growing on rock surface, much more difficult to sample. [17:03:28] What good luck then! [17:03:36] carolynruppel leaves the room [17:03:55] I didn't see where it was clipped. If we are not certain we got the cornulariid, I suggest another snip of the stalk. [17:04:06] cristianacastellobranco leaves the room [17:04:32] You have a better view than me, so I leave it to you to decide. [17:05:56] @Scott When they zoomed on the cut piece, the grip of the claw was covering the most dense part of the Cornulariid polyps but there were definitely a few above that before it tranistioned to the hydrozoans. [17:06:03] stephaniefarrington leaves the room [17:06:30] @Nolan: thanks for that. [17:06:38] I'm not an expert in octocorals but in our collections at NCSM we've got Telesto in the family Clavulariidae [17:06:42] I could see conulariid polyps above the cut, [17:06:44] LAT : 28.916127 , LON : -77.021151 , DEPTH : 1161.7533 m, TEMP : 4.3788 C, SAL : 35.00208 PSU, DO : 8.09253 mg/l, TURBIDITY : 1.1355 FTU [17:08:35] allencollins leaves the room [17:10:24] christophermah leaves the room [17:11:43] LAT : 28.916094 , LON : -77.021157 , DEPTH : 1155.2391 m, TEMP : 4.38294 C, SAL : 35.00243 PSU, DO : 8.13095 mg/l, TURBIDITY : 1.1477 FTU [17:13:28] @Steph the rocks are pocky like the ones yesterday, of course they are totally white [17:13:40] elizabethfraser leaves the room [17:13:43] @Megan: I didn't think Telesto had the chitinous periderm. It looks like these did. [17:14:11] @Megan: but I'm not an expert in this group! [17:14:44] Unknown for me [17:14:50] Demosponges yes [17:15:28] allencollins leaves the room [17:16:44] LAT : 28.916082 , LON : -77.021197 , DEPTH : 1149.9936 m, TEMP : 4.38294 C, SAL : 35.004 PSU, DO : 8.10692 mg/l, TURBIDITY : 1.16 FTU [17:16:57] Cutthroat eels; Synaphobranchidae [17:17:40] @Scott I didn't really get a good enough look at them and I don't know how to tell stoloniferous octocorals apart so I'd trust your ID more than mine! [17:17:56] paint can? [17:18:01] bucket [17:18:28] I was hoping before zoomong in that it would be a whale vertebra [17:18:41] Did you say Metallogorgia?!! [17:18:54] Yes, we saw some earlier too. [17:19:05] @Scott All our octocorals were collected by R/V Eastward expeditions off the coast of NC and I've got no idea how accurate the IDs are on those either [17:19:10] Do you want zooms [17:19:11] Wow. The shallow end of the range for them. [17:19:31] Oh good to know! [17:20:33] mariadiaz leaves the room [17:20:37] Just joining. Scanned through the video from bottom contact forward. Fishes imaged: first fish upon arriving at bottom = large Alephocephalid (slickhead) Conacara; Tripodfish is an interesting specimen of Bathypterois viridensis, a juvenile newly transformed from pelagic post-larval stage,yet to develop the typical black and white banding of adults; Large gray-black neobythitine with large eye, prominent lateral line, and fins formed into bottom feelers = Dicrolene intronigra; Shark = catshark, genus Apristurus; Eel in the background to far to ID to species = Synaphobranchus, and at this depth either S. affinis or S. kaupi, but more likely S. affinis; and more Synaphobranchus swimming off botto m [17:21:13] Thanks Ken! [17:21:31] @Ken Thank you! That's awesome! [17:21:32] christophermah leaves the room [17:21:45] LAT : 28.916018 , LON : -77.021209 , DEPTH : 1146.0303 m, TEMP : 4.39412 C, SAL : 34.99772 PSU, DO : 8.06873 mg/l, TURBIDITY : 1.3492 FTU [17:22:28] katherinebemis leaves the room [17:22:34] also notable are the nicely excavated burrows into this soft, chalky carbonate. Those burrows have very likely been made by the large ghostly white blind lobster Acanthocaris (I forget the specific name). In one of the burrows, I could just see the tips of its antennae [17:22:45] surprising number of suspension feeders in the depression. I wouldn't expect to see many at all unless flow conditions permit? [17:23:28] Must get some flow in there. Ripples even on the bottom [17:25:02] oooo! [17:25:19] Star phone. [17:25:35] Was just checking the DSCRTP database and they have a record of a Metallogorgia from Guayanilla Canyon off Puerto Rico by OkEx in 2015. Guess I missed that dive! Otherwise, don't see any in situ records shallower than 1200 m (there is a trawled specimen from 1071 m, but trawls may be off in depth) [17:26:46] LAT : 28.915997 , LON : -77.02101 , DEPTH : 1144.998 m, TEMP : 4.38999 C, SAL : 34.99873 PSU, DO : 8.1459 mg/l, TURBIDITY : 3.5592 FTU [17:27:03] monetmurphy leaves the room [17:27:04] I'm not sure what that yellow one was... "Juvenile" Paramuricea? Would need a better look. [17:27:34] "A few years ago" for us old people if 2004 and 2005! :-) [17:27:39] *is [17:27:49] The gap was 18 months. [17:28:14] It does feel like just a few years ago, though. [17:29:10] Yes, a Paramuricea. [17:29:28] Oh. This is a different colony from before. [17:29:38] But likely what that previous one was. [17:30:35] christophermah leaves the room [17:31:46] LAT : 28.91598 , LON : -77.020956 , DEPTH : 1144.6209 m, TEMP : 4.38233 C, SAL : 35.00168 PSU, DO : 8.12291 mg/l, TURBIDITY : 1.0745 FTU [17:31:50] @Megan: if you are interested [in the cornulariid], have a look at this: https://www.semanticscholar.org/paper/North-eastern-Atlantic-and-Mediterranean-species-of-L%C3%B3pez-Gonz%C3%A1lez-Oca%C3%B1a/adb3cf57bcfd794d3d6765356d7e3065679088c6 [17:32:02] katherinebemis leaves the room [17:32:28] NolanBarrett leaves the room: Replaced by new connection [17:34:17] sorry that I am joining late, but would someone explain what caused the sinkhole here? [17:35:03] I don't think we know! [17:35:47] Chiroiteuthis [17:36:00] Sorry: Chiroteuthis [17:36:38] @Scott awesome, thank you!! [17:36:47] LAT : 28.916011 , LON : -77.020927 , DEPTH : 1144.3092 m, TEMP : 4.37192 C, SAL : 35.00251 PSU, DO : 8.10595 mg/l, TURBIDITY : 1.0317 FTU [17:37:06] elizabethfraser leaves the room [17:37:20] What was going on with that bamboo whip we passed? I saw long strings leading off it. Mucus? [17:37:51] On that whip coral we just passed, there were streamers. Reminded me of benthic ctenephores. [17:38:08] Thank you! [17:38:24] christophermah leaves the room [17:38:32] Ugh. Missed that! Would like to see benthic ctenos! [17:39:08] We were too focused on the squid and went by it [17:39:47] Scanned back through again, listening to science crew comments. Regarding tripodfishes, they are not blind. Their eyes are greatly reduced in size but otherwise normally formed. structure of eyes of many odd benthic deepwater fishes have been studied in detail by Ole Munk and H. Somiya in the 1970-1980s. Tripodfishes feed upon nektonic prey, sensing them in nearfield with well-developed lateral line and the specialized pectoral fins held aloft - big nerves running to those right from occipitalspinal area of spinal cord. But the eyes are probably used to detect bioluminescent prey. Tripodfishes face into the current and wait for prey to arrive via bottom currents - the fish version of a stalked invert [17:40:08] Long past the whip with the streamers and didnt have polyps on it. [17:41:48] LAT : 28.916032 , LON : -77.020831 , DEPTH : 1144.1043 m, TEMP : 4.37385 C, SAL : 35.00375 PSU, DO : 8.07586 mg/l, TURBIDITY : 1.1355 FTU [17:41:59] species prob Chiroteuthis joubini [17:42:24] That is so cool! [17:43:21] How much time left on bottom? [17:44:07] stevenauscavitch leaves the room [17:44:32] allencollins leaves the room [17:45:44] We can do midwater dives anywhere [17:45:46] Thanks to all!! Pretty exciting until now the places eexplored!! [17:45:50] We have to leave bottom now. Then last day for a couple days. At least one day in transit [17:46:26] So no post-dive call today? [17:46:31] Thank you all for some great dives this week. Today was really neat with lots of unusual sightings today! And collections too! [17:46:35] emilycrum leaves the room [17:46:39] Thanks Allen and Stephanie [17:46:44] The single macrourid images from the tail end, with long erect dorsal fin ray, dark along the edge = Nezumia aequalis [17:46:46] [I just stepped out for a moment so spologize if you said this] [17:46:50] LAT : 28.915918 , LON : -77.021109 , DEPTH : 1142.3417 m, TEMP : 4.37142 C, SAL : 35.00296 PSU, DO : 8.11996 mg/l, TURBIDITY : 1.0806 FTU [17:47:15] Thank you for everyone! it was another great dive! love to collect storoniferous octocoral! [17:47:16] stephaniefarrington leaves the room [17:48:17] thanks again.. Great urchin collect! sorry to hear the next day or so will be transit.. [17:48:56] yes, thanks all - look forward to the next dive! [17:49:04] yay! Habrocidaris! [17:49:34] EX2107_DIVE08 ROV Ascending [17:49:54] Thanks again and have a safe transit! [17:50:20] Thanks all! [17:50:26] So... no post-dive call today? [17:50:44] monetmurphy leaves the room [17:50:56] cristianacastellobranco leaves the room [17:51:03] asakomatsumoto leaves the room [17:51:23] christophermah leaves the room [17:51:33] mariadiaz leaves the room [17:51:35] allencollins leaves the room [17:51:49] LAT : 28.915941 , LON : -77.021522 , DEPTH : 1067.3767 m, TEMP : 4.7266 C, SAL : 35.02529 PSU, DO : 7.87394 mg/l, TURBIDITY : 0.8913 FTU [17:51:51] NolanBarrett leaves the room [17:52:24] I guess I should have asked the question via twitter... [17:52:29] kensulak leaves the room [17:52:34] adamskarke leaves the room [17:52:40] I got hung up on, so that was my answer! [17:53:07] katherinebemis leaves the room [17:53:28] Whoops! Sorry Scott. [17:53:33] not sure about the species of Chiroteuthis. I recommend leaving it at Chiro sp. until I can review the video. [17:53:34] No post dive call. were going to do a pre-dive before our next dive... well keep you posted... no dive tomorrow! [17:53:39] Weird that you couldn't hear me! [17:53:49] Got it Mike. Will do on that. [17:53:50] meganmcculler leaves the room [17:53:54] Got it. good luck, and stay safe. [17:54:13] Should be exciting as we cut and run. [17:54:38] I will be lobbying for a wall dive in the eastern GoMex! [17:54:50] If you are going that far. [17:55:09] Thanks for all the input today everyone. Send suggstions for possible next dives for Portalis terrace. OK I like that idea for wall dive Scott! [17:55:29] We shall see how farr we run. [17:56:16] TTFN [17:56:50] scottfrance leaves the room [17:56:50] LAT : 28.916016 , LON : -77.021495 , DEPTH : 915.6791 m, TEMP : 5.68374 C, SAL : 35.08717 PSU, DO : 7.1092 mg/l, TURBIDITY : 0.8791 FTU [17:56:55] allencollins leaves the room [18:01:23] emilycrum leaves the room [18:01:50] LAT : 28.916059 , LON : -77.021497 , DEPTH : 765.9575 m, TEMP : 7.28987 C, SAL : 35.13721 PSU, DO : 5.80985 mg/l, TURBIDITY : 0.8852 FTU [18:03:44] monetmurphy leaves the room [18:06:51] LAT : 28.915834 , LON : -77.021512 , DEPTH : 614.0184 m, TEMP : 10.47059 C, SAL : 35.3632 PSU, DO : 4.70051 mg/l, TURBIDITY : 0.8852 FTU [18:11:51] LAT : 28.915766 , LON : -77.021386 , DEPTH : 458.9495 m, TEMP : 13.86571 C, SAL : 35.82826 PSU, DO : 4.91965 mg/l, TURBIDITY : 0.8852 FTU [18:13:14] upasanaganguly leaves the room [18:16:52] LAT : 28.915931 , LON : -77.020887 , DEPTH : 302.4566 m, TEMP : 16.42708 C, SAL : 36.23724 PSU, DO : 5.43389 mg/l, TURBIDITY : 0.8852 FTU [18:17:52] jasonchaytor leaves the room [18:18:00] stephaniefarrington leaves the room [18:21:52] LAT : 28.916116 , LON : -77.019987 , DEPTH : 147.9041 m, TEMP : 22.07652 C, SAL : 36.85941 PSU, DO : 6.23085 mg/l, TURBIDITY : 0.8425 FTU [18:26:53] LAT : 28.916519 , LON : -77.019107 , DEPTH : 58.3432 m, TEMP : 26.71448 C, SAL : 36.53139 PSU, DO : 6.60468 mg/l, TURBIDITY : 0.7875 FTU [18:27:42] iscwatch leaves the room [18:31:54] LAT : 28.917002 , LON : -77.018554 , DEPTH : 57.3154 m, TEMP : 26.72227 C, SAL : 36.52986 PSU, DO : 6.60929 mg/l, TURBIDITY : 0.7814 FTU [18:36:55] LAT : 28.917394 , LON : -77.017999 , DEPTH : 57.7306 m, TEMP : 26.71955 C, SAL : 36.53019 PSU, DO : 6.59992 mg/l, TURBIDITY : 0.7753 FTU [18:40:58] EX2107_DIVE08 ROV on Surface [18:58:09] EX2107_DIVE08 ROV Recovery Complete [19:01:06] EX2107_DIVE08 ROV powered off [19:26:53] michaelvecchione leaves the room