[11:53:35] EX2104_DIVE16 ROV powered off [12:33:43] EX2104_DIVE16 ROV Launch [12:41:11] EX2104_DIVE16 ROV on Surface [12:41:15] DIVE16 test message from Okeanos Explorer [12:42:04] EX2104_DIVE16 ROV Descending [12:44:02] LAT : 38.13526 , LON : -62.304763 , DEPTH : 25.855 m, TEMP : 26.55703 C, SAL : 36.36024 PSU, DO : 6.64754 mg/l [12:49:03] LAT : 38.13584 , LON : -62.30415 , DEPTH : 107.4718 m, TEMP : 21.74822 C, SAL : 36.70469 PSU, DO : 6.9503 mg/l [12:54:03] LAT : 38.136125 , LON : -62.303981 , DEPTH : 252.8473 m, TEMP : 19.09444 C, SAL : 36.66007 PSU, DO : 6.67762 mg/l [12:59:03] LAT : 38.136191 , LON : -62.303975 , DEPTH : 400.9248 m, TEMP : 18.56034 C, SAL : 36.60372 PSU, DO : 6.63383 mg/l [13:04:05] LAT : 38.136177 , LON : -62.303932 , DEPTH : 547.681 m, TEMP : 17.20507 C, SAL : 36.35486 PSU, DO : 5.70848 mg/l [13:09:05] LAT : 38.136157 , LON : -62.30391 , DEPTH : 695.0411 m, TEMP : 14.93124 C, SAL : 35.97299 PSU, DO : 5.33605 mg/l [13:14:05] LAT : 38.136172 , LON : -62.303825 , DEPTH : 839.1674 m, TEMP : 11.45612 C, SAL : 35.4741 PSU, DO : 4.72852 mg/l [13:19:06] LAT : 38.136164 , LON : -62.303988 , DEPTH : 987.2894 m, TEMP : 8.48577 C, SAL : 35.17705 PSU, DO : 4.93027 mg/l [13:22:36] iscwatch leaves the room [13:24:06] LAT : 38.136017 , LON : -62.303848 , DEPTH : 1137.0813 m, TEMP : 6.46584 C, SAL : 35.10186 PSU, DO : 6.37799 mg/l [13:29:06] LAT : 38.135804 , LON : -62.303935 , DEPTH : 1285.4931 m, TEMP : 5.22487 C, SAL : 35.04065 PSU, DO : 7.45925 mg/l [13:34:06] LAT : 38.135611 , LON : -62.304015 , DEPTH : 1436.2011 m, TEMP : 4.761 C, SAL : 35.01241 PSU, DO : 7.83019 mg/l [13:39:07] LAT : 38.13542 , LON : -62.304278 , DEPTH : 1585.5768 m, TEMP : 4.5994 C, SAL : 35.00338 PSU, DO : 7.96071 mg/l [13:39:37] scottfrance leaves the room [13:44:07] LAT : 38.135244 , LON : -62.304195 , DEPTH : 1745.2475 m, TEMP : 4.41251 C, SAL : 34.98891 PSU, DO : 8.01571 mg/l [13:49:08] LAT : 38.1351 , LON : -62.304124 , DEPTH : 1895.198 m, TEMP : 4.10047 C, SAL : 34.9699 PSU, DO : 8.12256 mg/l [13:54:08] LAT : 38.135101 , LON : -62.303971 , DEPTH : 2047.1504 m, TEMP : 3.88246 C, SAL : 34.95957 PSU, DO : 8.17575 mg/l [13:59:08] LAT : 38.135152 , LON : -62.304071 , DEPTH : 2199.649 m, TEMP : 3.76269 C, SAL : 34.95941 PSU, DO : 8.06112 mg/l [13:59:14] noellehelder leaves the room [14:04:09] LAT : 38.134996 , LON : -62.304 , DEPTH : 2348.0034 m, TEMP : 3.64392 C, SAL : 34.96468 PSU, DO : 7.97691 mg/l [14:04:51] vondawarehamhayes leaves the room [14:06:18] kevinkonrad leaves the room [14:09:09] LAT : 38.135057 , LON : -62.303858 , DEPTH : 2499.3271 m, TEMP : 3.4523 C, SAL : 34.95211 PSU, DO : 7.88898 mg/l [14:12:33] upasanaganguly leaves the room [14:14:09] LAT : 38.135058 , LON : -62.30394 , DEPTH : 2647.35 m, TEMP : 3.27422 C, SAL : 34.94645 PSU, DO : 7.07263 mg/l [14:14:11] 2650m Depth - target depth is 3220m [14:19:09] LAT : 38.135269 , LON : -62.303899 , DEPTH : 2789.0116 m, TEMP : 3.16475 C, SAL : 34.94248 PSU, DO : 7.06449 mg/l [14:22:14] noellehelder leaves the room [14:24:10] LAT : 38.1354 , LON : -62.303725 , DEPTH : 2936.9909 m, TEMP : 3.06578 C, SAL : 34.93835 PSU, DO : 4.37786 mg/l [14:25:49] There is a lot of current between these two features so the pilots are having to take it slow, we'll be a bit delayed reaching the bottom. [14:29:11] LAT : 38.135109 , LON : -62.303796 , DEPTH : 3085.4656 m, TEMP : 2.87154 C, SAL : 34.92654 PSU, DO : 3.93564 mg/l [14:32:08] christophermah leaves the room [14:34:11] LAT : 38.134924 , LON : -62.304216 , DEPTH : 3101.6808 m, TEMP : 2.84344 C, SAL : 34.92851 PSU, DO : 7.1325 mg/l [14:36:18] noellehelder leaves the room [14:37:35] 100m off bottom [14:39:12] LAT : 38.134533 , LON : -62.304351 , DEPTH : 3149.3578 m, TEMP : 2.77878 C, SAL : 34.92265 PSU, DO : 7.38178 mg/l [14:40:55] 50m off bottom [14:42:17] noellehelder leaves the room: Replaced by new connection [14:44:04] bottom in sight [14:44:08] bottom in sight [14:44:13] LAT : 38.134651 , LON : -62.304279 , DEPTH : 3220.3923 m, TEMP : 2.77284 C, SAL : 34.92185 PSU, DO : 7.46328 mg/l [14:45:15] EX2104_DIVE16 ROV on Bottom [14:46:04] Looks gravely [14:46:18] not grave-ly, but gravel-y [14:46:20] might be FeMn pavement [14:46:25] Hello! [14:46:36] kimberlygalvez leaves the room: Replaced by new connection [14:46:38] Interesting. Different from other seafloors we've been seeing? [14:46:44] HI Asako! [14:46:50] Hi Scott! [14:47:06] Hi Asako! [14:47:10] I'm glad to back seafloors again! [14:47:16] @Asako: You are not at the Olympic games?! ;-) [14:47:18] Hi Rhian!!!! [14:47:55] @Jason: as you said - pavement. [14:47:57] @Scott NEVER!!! but I saw airshow today from my window. [14:48:11] From airshow to deep-sea show! [14:48:24] I get something right once of twice a month [14:48:33] We're going to poke it after we set down to see how solid it is [14:49:13] LAT : 38.134574 , LON : -62.304293 , DEPTH : 3228.265 m, TEMP : 2.74628 C, SAL : 34.92252 PSU, DO : 7.47197 mg/l [14:49:29] I prefer deep-sea show now :) [14:51:33] christophermah leaves the room [14:52:06] It does alomost look like a carpet of nodules... [14:53:06] Is this the current-scoured bottom we thought we might see in this channel...? [14:53:18] ???? [14:53:21] I was just going to comment on the Mc-nodule look! [14:54:08] I agree Scott and Cindy -- don't let anyone see the video [14:54:13] LAT : 38.134486 , LON : -62.30436 , DEPTH : 3229.7988 m, TEMP : 2.76861 C, SAL : 34.91755 PSU, DO : 7.5011 mg/l [14:54:29] @Mike: too late. [14:54:36] wow [14:54:53] Wow. I didn't know there were nodule "provinces" in the North Atlantic. [14:55:15] vondawarehamhayes leaves the room [14:55:18] exploration! [14:55:20] yeah, they are here - they were reported early on off Bermuda [14:55:22] I didn't expect that nodule move [14:55:27] And this is why we test hypotheses! [14:57:09] THey are not known from the NESM province, and we are above the abyssal depths that we would expect them....It is perhaps a thick sediment pile underneath [14:57:27] THe nodule require components from both the water and sediment [14:58:05] @Cindy: thanks. I was not aware. [14:58:29] Good morning, cool stuff already [14:58:35] noellehelder leaves the room [14:59:15] LAT : 38.134585 , LON : -62.304302 , DEPTH : 3229.6397 m, TEMP : 2.78448 C, SAL : 34.91622 PSU, DO : 7.63176 mg/l [14:59:23] I thought nodules could be formed by preciptation from seawater, from porewater, or both; there are names for these types if I'm remembering right [14:59:30] stepping away for ca 20 min [14:59:41] Hard to stop eating ice cream once you start! [15:00:18] I appreciate that Kira gets the carbonate platform dives and Jayson gets the nodule fields [15:01:05] Lol @Kevin [15:02:35] A look at small fauna on nodule surfaces would be interesting - forams probably, maybe small sponges... [15:02:40] @cindy, there are 3 processes I believe (not a nodule expert), from seawater, from sediment, and a hybrid of both. [15:03:53] These ones appear to be sitting in the sediment with the tops out in the water [15:04:15] LAT : 38.134552 , LON : -62.304502 , DEPTH : 3228.7452 m, TEMP : 2.7664 C, SAL : 34.92148 PSU, DO : 7.66485 mg/l [15:04:19] Synaphobranchid [15:05:13] vondawarehamhayes leaves the room [15:05:32] @jason The fact they don't have rounded bottoms makes me assume they're diagenetic nodules. Maybe this is a region of intense fluid upwelling [15:05:36] Small coral "sticks" [15:06:09] Really would be good to look at a little bit of the small stuff! [15:07:08] Yes - the pilots have been requested to fly low today because of this find - but there are significant currents down here for them to contend with. Please be patient everyone! [15:07:25] I'm seeing a lot of "jerkiness" in the camera feed today. Anyone else, or is that just my connection? [15:07:41] This one has embryos [15:07:50] You can see red color under the abdomen [15:08:02] or a parasite [15:08:37] Primnoid [15:09:15] LAT : 38.134456 , LON : -62.304306 , DEPTH : 3227.9798 m, TEMP : 2.76329 C, SAL : 34.92119 PSU, DO : 7.66264 mg/l [15:09:40] also ophiuroids [15:09:52] collect one? ... says the fish guy [15:10:37] nice [15:10:42] I see little branching white bryozoans [15:10:55] very cute [15:11:50] upasanaganguly leaves the room [15:12:39] @Scott - I'm getting some occasional pixelation in my video [15:14:16] LAT : 38.134319 , LON : -62.304418 , DEPTH : 3227.8458 m, TEMP : 2.73294 C, SAL : 34.91999 PSU, DO : 7.70069 mg/l [15:14:34] Checking database, we collected small whip-like primnoids from 2300 m depth back in Corner Seamounts that looked somewhat like this (a bit hard to tell with the polyps retracted, but they did have 2 polyps per whorl) were in the genus Convexella. [15:15:00] Crinoid bling! [15:15:09] :) [15:15:17] looks like a hyocrinid [15:15:24] bryozoan crust on Sargassum (probably Jellyella) [15:15:42] "Jellyella"! I like that name. [15:15:50] Ampheraster [15:16:06] @Scott me too! very fun to say out loud [15:16:18] calling [15:16:49] named after Eliza Catherine Jelly [15:17:02] @Megan: not what I would have predicted! [15:17:05] @cindy, I think the terms you were looking for earlier to describe the formation process of the nodules are hydrogenetic, diagenetic and hybrid [15:17:33] @jason - thanks! was driving me crazy not to recall [15:18:28] I'd say anemone (Actiniaria) [15:18:50] Yes, I think so scott [15:18:57] Amazing how many of the soft corals there are [15:19:10] pteropod tests, spicules and larger coral? debris in the sediment, but doesn't appear to be a lot os fine material on the surface, extreme winnowing [15:19:17] LAT : 38.134402 , LON : -62.304368 , DEPTH : 3227.7414 m, TEMP : 2.73576 C, SAL : 34.91851 PSU, DO : 7.55744 mg/l [15:19:24] nice little isopod [15:19:50] getting oriented and thinking on these nodules. When we do see them at these shallower depths, they are mostly hydrogenetic, so different formation environment than say, clarion clipperton zone nodules [15:20:27] another isopod [15:20:50] @kira, wondering is the sediment is oxic enough for diagenetic?? [15:21:17] @Rhian: re all the soft corals... I wonder if that is what the target of this asteroid is... [15:21:53] @Chris: did you just call yourself a God? :-) [15:22:02] christophermah leaves the room [15:22:08] @jason, you're on it - likely the oxygen penetration depth is deep enough for no diagenetic input from sediment [15:22:14] Pagurid [15:22:25] wasn't it coarse sediment? did it look like carbonate? [15:22:35] where'd he find that shell? [15:22:51] @Kira: it put up a pretty fine plume when we disturbed it... [15:23:14] Very white sediment, likely heavily biogenic, wondering how much organic material is in there from sargassum, etc. [15:23:47] yeah, would have to find out redox! [15:23:56] and organic matter [15:24:16] They seem to be residing on sand and finer sized carbonate sediment. That's why I was thinking diagentic formation. The bottoms seems flat when they were being sucked up [15:24:19] LAT : 38.134209 , LON : -62.304409 , DEPTH : 3227.9271 m, TEMP : 2.73113 C, SAL : 34.91826 PSU, DO : 7.67781 mg/l [15:25:43] It's not impossible to find nodules in a place like this, but definitely always a treat to fine. Requires some sedimented setting, lots of materials for nuclei, and low enough sedimentation rates [15:25:49] Bryozoan behind nemone [15:26:23] Was thta a hydrocoral?! [15:26:32] Just to back left of anemone. [15:26:46] Long gone, sorry Scott, I didn't see it [15:26:59] Looked a bit like a Crypthelia [15:28:10] Bathocyroe? ctenophore [15:28:33] kevinkonrad leaves the room [15:28:41] kimberlygalvez leaves the room [15:29:17] LAT : 38.134448 , LON : -62.304771 , DEPTH : 3225.9911 m, TEMP : 2.77239 C, SAL : 34.92069 PSU, DO : 7.65716 mg/l [15:29:38] is that sponge or not? [15:29:53] Sponge! [15:30:04] @kevin - I don't know that the carbonate sediments means diagenetic. Usually at these shallower depths they are hydrogenetic [15:30:09] peterauster leaves the room [15:30:13] Thanks Rhian! [15:32:50] Because so much of the fauna is small here, it would be nice if we could slow down periodically and take a closer look at the bottom so we could identify a little better some of what we are passing over. Not every stick, of course! But I'm suggesting we don't always wait until we see something larger, but zoom in every now and again. [15:33:02] vondawarehamhayes leaves the room [15:33:32] @Scott seconded [15:33:49] @scott thirded [15:34:18] LAT : 38.134245 , LON : -62.304376 , DEPTH : 3224.679 m, TEMP : 2.77335 C, SAL : 34.92263 PSU, DO : 7.87655 mg/l [15:35:18] christophermah leaves the room [15:36:22] Can't tell if the spiky thing in front is a sponge or a hydroid or an octocoral [15:37:46] I think cladorhizid too [15:39:19] LAT : 38.134237 , LON : -62.304526 , DEPTH : 3225.9593 m, TEMP : 2.77465 C, SAL : 34.92253 PSU, DO : 7.63546 mg/l [15:40:05] is that a limpet lower right? [15:40:23] I think it would be cool to scoop nodules if they're loose and covered in bio [15:40:28] or monoplacophoran, which is on my bucket list...just joking [15:41:20] I could see some really fine laminated textures on one of the broken nodules signaling hydrogenetic. [15:41:53] @Megan: we suctioned up almost a dozen nodules earlier [15:42:03] kira - are you still on the line? [15:42:08] want to explain? [15:42:12] yes I am [15:42:12] @Scott oh did you? I missed that..my bad! [15:42:22] Green...? [15:42:31] Not a natural color down here! [15:42:41] Baby crinoid plus barnacles [15:42:47] nice barnacles [15:43:07] Heinekin? [15:44:09] Several copepod parasites [15:44:16] noellehelder leaves the room [15:44:20] LAT : 38.134039 , LON : -62.30436 , DEPTH : 3224.9079 m, TEMP : 2.77867 C, SAL : 34.9213 PSU, DO : 7.71928 mg/l [15:44:27] rattail w/prasires [15:44:30] Most of what you see trailing (the paired sacs) are egg sacs [15:45:17] correction parasites [15:45:34] B. ophidiidae ... meaning Big ophidiid [15:47:08] tunicate [15:47:54] @Mike - was it a grenadier? Macrouridae - not a cusk-eel. I only caught a quick look as it was swimming away [15:48:43] they look a little bit like eggs in there but that's a total guess [15:48:54] @Peter I thought it was a big macrourid [15:49:21] LAT : 38.133454 , LON : -62.304665 , DEPTH : 3223.6227 m, TEMP : 2.7781 C, SAL : 34.92208 PSU, DO : 7.59219 mg/l [15:49:44] Culeolus was the genus name I could not recall for that tunicate. [15:50:04] jocelyncooper leaves the room [15:50:44] @Peter there are some screen grabs on Facebook Underwater Webcams Screenshot SHaring site [15:51:10] Not sure why my video is so delayed today... [15:51:27] This is an isidid, either J-calde or B clade [15:54:10] higher biomass, higher taxonomic diveristy, higher functional diversity than I would have guessed [15:54:22] LAT : 38.134004 , LON : -62.3042 , DEPTH : 3221.862 m, TEMP : 2.77646 C, SAL : 34.92206 PSU, DO : 7.545 mg/l [15:55:40] kaseycantwell leaves the room [15:55:48] @cindy you mean for a nodule field? I think because shallower seamount environment than abyssal plain [15:56:06] @Kira...for the nodule field... [15:56:25] noellehelder leaves the room [15:56:30] kimberlygalvez leaves the room [15:56:43] @Kira agreed...just never thought about it! Will be a nice discovery paper. [15:56:59] @kevin can you think of a volcanic process that would leave this much debris for nuclei? [15:57:35] @cindy - yes :) will be great to dig into context for how/why/what for these nodules [15:57:47] How does this compare to other nodule fields @cindy in terms of diversity? [15:58:01] Synaph - looks like it is waiting for something to emerge from the edges of the boulders ... maybe lunch? [15:59:13] vondawarehamhayes leaves the room [15:59:22] LAT : 38.133733 , LON : -62.304278 , DEPTH : 3218.8184 m, TEMP : 2.77917 C, SAL : 34.92132 PSU, DO : 7.66961 mg/l [15:59:40] To be honest, I have never seen video from the CCZ, but there are papers published on megafauna, so it would be easy to compare. THe images that come to mind for me from the CCZ often feature the same yellow holothurian.... plus the tiny stuff on the nodules [16:00:27] Pilot change [16:01:04] @kira, You can get explosive volcanic eruptions at this depth but I can't think of an instance of a basaltic volcano producing submarine 'bombs and blocks', especially on this scale [16:02:06] christophermah leaves the room [16:02:39] wondering if a cascade of sediment/flank failure provide a blast of input that was too big for the current to shift [16:03:10] I would assume the boulders are icerafted. But I missed the last 20min of footage. [16:03:20] First eel encountered early on is Synaphobranchus kaupii - zoom good enough to confirm ID by far forward origin of dorsal fin. This is the deepest record of this species in any ocean, but about 500 m. The second eel right on the bottom, among boulders, is almost certainly Ilyophis brunneus. This genus hugs the bottom, while S. kaupii hovers. Prominent white lateral line pores confirm Ilyophis [16:03:41] Maybe a mass wasting deposit where the finer sediment got blown away by strong bottom currents? [16:04:04] Convexella agin... [16:04:09] video is wonderful to see for nodule fields. it hard to get distribution scale for bio and geo from photos. [16:04:19] Thanks Scott [16:04:24] LAT : 38.133849 , LON : -62.304057 , DEPTH : 3220.1219 m, TEMP : 2.77867 C, SAL : 34.92197 PSU, DO : 7.54538 mg/l [16:04:27] Perhaps I should say, prinoid whip again. Convexella is a guess. [16:05:13] Also a new depth record for the fish Ilyophis brunneus [16:05:14] @kira sounds like you need a couple of undergraduate interns to do size distributions along track using the lasers...those poor souls [16:05:27] @Ken: good stuff! [16:06:20] Serpulid polychaete to left [16:06:29] yeah, the larger ones we usually call coated cobbles, usually a bit different morphology than the smaller nodules [16:06:42] Would be worth zooming in on any other bottom-hugging synaphobranchids. There are a few other very deep dwelling species and rare genera at this depth horizon [16:06:53] Caprellid amphipod behind brisingid [16:07:36] this zoom here, rock more angular [16:07:59] now looking like coated debris compared to the rounded nodules earlier [16:08:09] approaching the slope [16:08:14] high slope [16:08:47] @Cindy: re your earlier question "Where did it get shell" At least some of these anemone associates are known to secrete a shell-like structure so they effectively replace the need for a large shell, and the crab does not need to find a new one as it grows. [16:09:24] LAT : 38.133572 , LON : -62.304434 , DEPTH : 3217.8308 m, TEMP : 2.77505 C, SAL : 34.9222 PSU, DO : 7.56467 mg/l [16:09:36] right, looking at the bathy for gosnold, the SE guyot looks like it has large scale erosion leading to our dive site [16:09:43] The rare synaphobranchid eel, Haptenchelys texis, known from only a few trawled specimens, is likely to be encountered at this depth. It has minute lateral line pores which would probably not show up - versus those of Synaphobranchus or Ilyophis. Need to zoom in [16:10:13] Similar to the mass wasting deposits north of Oahu [16:10:36] @Ken: we'll be sure to get a good look at the next ones we see (I hope we see more!). [16:12:00] definitely more "debris" like [16:12:06] @Scott - thanks! I didn't know that! [16:13:20] christophermah leaves the room [16:13:55] or is that shell debris?? [16:14:06] Slurp? [16:14:15] vondawarehamhayes leaves the room [16:14:25] LAT : 38.133484 , LON : -62.304201 , DEPTH : 3217.6869 m, TEMP : 2.7807 C, SAL : 34.92129 PSU, DO : 7.54287 mg/l [16:14:27] The very large, very slowly swimming macrourid, rattail, seen earlier is likely the large abyssal species Coryphaenoides leptolepis. This gets up to one meter long. Rather rare. Related to C. armatus which predominates at rise depths. This fish does not look like C. armatus. It has two skinny parasitic copepods dangling from the tail [16:14:31] hi here! something good collected?? [16:14:49] or something good seen? [16:15:12] @Cindy: the structure is called a carcinoecium. Here is a good place to start if you are interested: https://www.ingentaconnect.com/content/umrsmas/bullmar/2004/00000074/00000002/art00008?crawler=true&casa_token=dhVORtEGiE8AAAAA:Oq_Wr_dLxBhCcyOueJbO1XEgy8kwPgtdcA9Z_RbzAyEIPlm8iLCzh_zhCkz_NwDTY3-Bwm8hNpUZZYXypJnXXfZg [16:15:30] @Tina: collections only for geology so far. [16:15:52] i don't thing FeMn material would flake off like that...will be good to see if it's some thin debris that's been coated [16:15:54] zoanthis with hermit crabs? [16:16:17] Certainly an odd morphology [16:16:22] @Tina: hermit crabs with anemones. Haven't seen Epizoanthus yet [16:16:37] I think it's epizoanthis [16:16:42] @Tina: lots of interesting small stuff. Primnoid whips, cladorhizids, bryozoans... [16:17:04] Sorry - I thought she was asking about something earlier. It is in view now? [16:17:13] noellehelder leaves the room [16:18:10] On the Parapagurus Scott, I did a little reading while I was on lunch - we see them like that abundantly in hte NE Atlantic [16:18:26] @scott, it was about cyndy question. anemone shell is not like carcinoecium... [16:18:46] @Rhian: sure, I've seen lots of them. But it isn't what I thought we saw earlier today. Perhaps your view was better. [16:19:25] LAT : 38.133637 , LON : -62.304158 , DEPTH : 3216.8465 m, TEMP : 2.77488 C, SAL : 34.93237 PSU, DO : 7.49861 mg/l [16:19:31] @Tina: I'm getting lost in the crosstalk and not sure what converstaion I'm following any more! [16:20:00] I will check video [16:20:08] upasanaganguly leaves the room [16:20:35] peterauster leaves the room [16:21:20] There is a surprising abundance and diversity of mobile megafauna here at 3200+ meters. Parapagurids and several fish suggest good supply of benthic infauna as food for mobile megafaunal foragers. [16:21:39] Hi Tina!! [16:22:09] Hi Asako! [16:23:40] asakomatsumoto leaves the room: Replaced by new connection [16:23:48] @Tina we also saw soft coral as well (not Anthomastus though [16:24:02] Need two monitors here - I am bouncing back and forth between this OE dive and the simultaneous Nautilus ROV mission dive off the West Coast [16:24:13] but I'm interested in that corals... [16:24:17] meganmcculler leaves the room [16:24:26] LAT : 38.133544 , LON : -62.304371 , DEPTH : 3217.247 m, TEMP : 2.79013 C, SAL : 34.92288 PSU, DO : 7.59649 mg/l [16:24:49] here the guy [16:25:12] Both competing deep ROV missions are currently both looking at large brittle stars [16:25:40] @Ken: tells you something about how common ophiuroids are in the deep sea! [16:25:41] :) [16:26:08] vondawarehamhayes leaves the room [16:26:31] Sargassum [16:26:35] good one [16:26:38] Interesting ribbon growth on the rock [16:26:43] Sponge i presume [16:27:52] @scott, may be Maldanid tube as well [16:28:22] Speculative: I wonder if we're looking at a ancient turbidite like deposit where we are laterally varying in debris size. The completely round nodules may represent the finer grain debris that provide nuclide for nodule growth. Should get coarser upslope [16:28:27] @Tina: it looked "branched", or bifurcating. Would maldanid do that? [16:28:55] These are really unusual sponges [16:28:59] Note with the larger rocks come larger fauna on them. More stability... [16:29:05] asakomatsumoto leaves the room: Replaced by new connection [16:29:14] These look like, I think the name is Bolosoma [16:29:27] LAT : 38.133463 , LON : -62.304361 , DEPTH : 3215.4871 m, TEMP : 2.80115 C, SAL : 34.91774 PSU, DO : 7.59919 mg/l [16:29:41] primnoid! [16:29:47] at the back [16:29:58] two [16:30:00] yes, we have seen this primnoid sometimes [16:30:05] @kevin I like that idea [16:30:07] kimberlygalvez leaves the room [16:30:09] They're verywhere Tina! [16:30:13] hmm.. they look more Caulophacus to me [16:30:16] not turbidite, we're laterally coarsing upwards towards the seamount [16:30:37] no collection? they are quite common [16:30:51] Sorry, not Bolosoma (which is a euplectellid), but Caulophacus, which is a Roseelid. Glass sponge. [16:30:55] @kevin...the T-word! Debris aprons are more complex structurally and while might have turbidite-like layers in them, the coarsening/fining structure isn't as well defined [16:31:06] e.g. https://www.ncei.noaa.gov/waf/okeanos-animal-guide/RossellidaeStalked001.html [16:31:41] @kevin and @jason angular means FeMn coating might also be thinner...more recently deposited debris? [16:31:44] We're going to look at collecting the primnoid - just need to find the right one (i was about to earlier but the pilot change happened) [16:32:13] if there are any possibility of collection, I vote primnoid or small softcoral.. [16:32:20] I'd say best if you could find one on a small rock/nodule you can pick up. [16:32:21] Can you grab the rock? [16:32:41] Hydroids left? [16:33:08] look Tina, to the right below. that is the softcoral I mean [16:33:12] sponge also quite common [16:33:14] @Tina: don't see. I do see, I think, stoloniferous octocoral. PLus flat sponges on rock to left. [16:33:18] We're getting all sorts of rocks today. Hopefully there is some fresh basalt pockets in some of them. [16:33:19] that platey structure.....huh [16:33:42] this cobble has got to [16:33:43] yes.. thanks asako [16:33:57] it is a coral right? [16:34:01] almost impossible for that to be pure FeMn [16:34:26] the bowling ball we got at the start has to have something bigger in it [16:34:28] LAT : 38.133559 , LON : -62.304591 , DEPTH : 3215.0857 m, TEMP : 2.782 C, SAL : 34.92207 PSU, DO : 7.54216 mg/l [16:34:34] well, I can't guarantee freshness :) [16:34:38] these small candle sponges are also quite common [16:35:10] There is actually a lot common here, just very small and easily passed over. [16:35:52] Sad. No anemone collection... [16:36:22] vondawarehamhayes leaves the room [16:36:25] sponge is also good [16:36:29] But the sponge will be a good twofer. [16:36:30] Having had a rock stuck inbetween the fingers the other day they're a little cautious :) [16:36:38] Understood! [16:36:42] who knows what is growing other side? [16:37:10] Better the "easy" collection in this circumstance. Recognizing no collection is easy. [16:37:24] I was typing and missed what happened. [16:37:36] they cut the coral) [16:37:53] tapped it with the finger and it came right off sadly [16:38:42] Small things today, this is the most we've used the suction this cruise! [16:39:27] noellehelder leaves the room [16:39:27] LAT : 38.133364 , LON : -62.304356 , DEPTH : 3214.9804 m, TEMP : 2.78415 C, SAL : 34.92307 PSU, DO : 7.51609 mg/l [16:40:10] kiramizell leaves the room [16:40:51] Looks to still be attached... [16:41:10] There we go. [16:41:41] That is a little twig. [16:42:36] how do you think to pick up that fallen sponges as well..? [16:42:37] meganmcculler leaves the room [16:44:25] collection? [16:44:29] LAT : 38.133476 , LON : -62.304232 , DEPTH : 3214.7587 m, TEMP : 2.78782 C, SAL : 34.92252 PSU, DO : 7.54619 mg/l [16:44:30] it is weird one [16:44:36] looks nice! [16:44:50] We're being pulled by the tether - no more collections right here sorry! [16:44:54] so thick [16:45:04] and so thin sceleton [16:45:13] That was interesting. [16:45:41] @scott, you have something similar? [16:45:59] OK time for the Fish-Whisperers to start chanting in the background [16:46:22] we have only one and he is at lunch( [16:47:12] @Tina: not sure... Will have to scan through my database to help my failing memory. It was such a thin skeleton... [16:47:21] Almost see compositional ripples in the field [16:47:29] we had to collect it [16:47:52] @Tina: your "maldanid" I think is asponge... [16:47:56] encrusting sponge [16:48:16] Another spiky sponge to right [16:48:21] @scott, I was looking at grey one) [16:48:35] @Tina: ah! [16:49:04] more pagurids [16:49:29] LAT : 38.133147 , LON : -62.304634 , DEPTH : 3210.9773 m, TEMP : 2.78652 C, SAL : 34.92342 PSU, DO : 7.49959 mg/l [16:50:03] christophermah leaves the room [16:50:52] kiramizell leaves the room [16:51:26] sinking Sargassum carries with it sargassum fish, pipefish, sargassum crabs to their death. They show up in the stomach contents of omnivorous scavenging fishes that ingest the Sargassum indicentally. [16:52:03] i saw those ripple-like features @Kevin [16:52:39] Collecting a piece of this [16:52:50] are those olive-colored leaf-like things forams? [16:53:16] The bottom has become more undulated [16:53:51] Greater influence of the debris apron over the current [16:54:17] is the coral sitting on the debris? or the coated cobbles? [16:54:29] LAT : 38.133191 , LON : -62.30444 , DEPTH : 3210.105 m, TEMP : 2.79567 C, SAL : 34.92374 PSU, DO : 7.50031 mg/l [16:54:56] Perhaps see if the rock can be grabbed? [16:55:18] we don't need the rock, but just curious what the coral is using as a substrate [16:55:21] The rock is pretty large I think.... [16:55:25] It is pretty small and may be tough to get the claw on...? Guess we should wait for close up. [16:55:34] @Rhian: copy that. [16:56:10] current is pushing them around, so after this collection we'll transect for a bit after this [16:56:17] Here is where we need extended taigon to act like fingers. [16:56:29] @Rhian: thanks for that update. [16:57:13] noellehelder leaves the room [16:58:02] christophermah leaves the room [16:58:12] it is not the same coral? [16:59:25] They're miving the rock out of the way to get the coral - so we might as well collect the rock....:) [16:59:30] LAT : 38.133184 , LON : -62.304285 , DEPTH : 3210.1798 m, TEMP : 2.79426 C, SAL : 34.92382 PSU, DO : 7.65078 mg/l [16:59:32] what is that thing swimming into the rockbox? [16:59:35] Was that a swimming worm thing? [16:59:44] oh, I see ok [17:00:01] Maybe some soft coral on there! [17:00:22] Awesome, good collection [17:00:53] I suggest letting some of that sponge dry on rock before scraping. [17:01:08] Now the good stuff! :-) [17:01:26] @scott, hey now!! [17:01:47] :) [17:01:58] @Jason: I merely meant, what we stopped for. [17:02:37] I think it is brittle [17:02:48] Need to get as close to base as possible if the rock is to big to pick up. [17:03:22] I like what I am hearing from pilots. [17:04:05] SWEET! [17:04:10] :-) [17:04:28] Lovin' all these rocks, let's turn D2 into an anchor [17:04:32] LAT : 38.133122 , LON : -62.304187 , DEPTH : 3210.9318 m, TEMP : 2.82204 C, SAL : 34.91805 PSU, DO : 7.78892 mg/l [17:04:34] I am not looking [17:05:46] kiramizell leaves the room [17:05:52] Doing my happy dance! [17:06:17] yey [17:06:21] That was beautiful. Very cooperative setting and rock. [17:06:29] Thanks pilots!! [17:06:39] That is my ideal geology collection! :-) [17:06:47] Hah! [17:06:55] @jason, both boulders seem to have finer carbonate sediment beneath them. Would that indicate the different size fractions of debris deposited contemporaneously? [17:07:37] So we are quite sample heavy at this point as an FYI, so we're going to transect a little here to try to get to the slope [17:08:42] I thnk the fish was another macrourid (rattail), possibly Coryphenoides armatus. Peter? Ken? [17:09:03] @kevin, possibly. The nature of the volcanoclastic material would be key in defining the structure of the debris apron. [17:09:31] LAT : 38.133069 , LON : -62.304277 , DEPTH : 3210.8262 m, TEMP : 2.82379 C, SAL : 34.92413 PSU, DO : 7.73716 mg/l [17:10:13] Another hypothesis for that coral just collected is that it is S1-clade (Cladarisis). That would work with the thin skeleton, but the shape remains unusual, as well as the depth. As Peter Auster has remarked a couple of times, we don't have enough observations and collections at this depth, and that makes this collection all the more valuable. [17:10:49] Lots of "sticks" protruding from the bottom here. [17:13:26] noellehelder leaves the room [17:14:01] Hot wax sponge... [17:14:32] LAT : 38.133124 , LON : -62.304529 , DEPTH : 3208.0995 m, TEMP : 2.8147 C, SAL : 34.92381 PSU, DO : 7.75058 mg/l [17:14:57] Are we moving too fast for an occasinal snap zoom to see some of the small stuff? [17:15:16] do we have dive tomorrow? [17:16:02] I think these are forams.... grey tubes [17:16:05] @tina, we are planning for one at Atlantis II, but it will depend on the current conbditions there again [17:16:09] looks like Freyella [17:16:31] anemone too [17:16:40] many of these catch and eat hyperiid amphipods and other small crustaceans [17:16:44] @jason, sure, weather [17:16:57] @tina, if it isn't the Atlantis II shallow site, it might be the Atlantis II deep location, or perhaps another dive at the north end of Gosnold [17:17:07] @chris hyperiids? [17:17:40] the ones I've seen look like hyperiids but I'll have to check them one of these days. [17:17:43] Chonelasma? [17:17:47] more shortish corals [17:17:53]