[02:03:56] gordonrees leaves the room [10:48:59] DIVE06 test message from the Okeanos Explorer [11:45:03] EX2104_DIVE06 ROV powered off [12:11:40] EX2104_DIVE06 ROV Launch [12:18:51] EX2104_DIVE06 ROV on Surface [12:20:23] EX2104_DIVE06 ROV Descending [12:21:06] LAT : 36.304216 , LON : -51.345617 , DEPTH : 21.7668 m, TEMP : 23.55559 C, SAL : 36.53144 PSU, DO : 7.18752 mg/l [12:26:06] LAT : 36.30259 , LON : -51.34595 , DEPTH : 65.8997 m, TEMP : 20.06592 C, SAL : 36.64469 PSU, DO : 7.33618 mg/l [12:31:07] LAT : 36.301933 , LON : -51.346076 , DEPTH : 228.2836 m, TEMP : 18.80067 C, SAL : 36.639 PSU, DO : 6.77711 mg/l [12:36:08] LAT : 36.301768 , LON : -51.346111 , DEPTH : 373.5672 m, TEMP : 18.37215 C, SAL : 36.57402 PSU, DO : 6.6885 mg/l [12:41:09] LAT : 36.301592 , LON : -51.34625 , DEPTH : 517.0386 m, TEMP : 16.81191 C, SAL : 36.27496 PSU, DO : 5.84807 mg/l [12:46:09] LAT : 36.301478 , LON : -51.346461 , DEPTH : 675.6284 m, TEMP : 14.08298 C, SAL : 35.838 PSU, DO : 5.5527 mg/l [12:49:32] a lot of particulate material in the water column this morning [12:50:22] some small fish [12:51:09] LAT : 36.301353 , LON : -51.346786 , DEPTH : 830.2726 m, TEMP : 11.0002 C, SAL : 35.41313 PSU, DO : 4.87501 mg/l [12:56:10] LAT : 36.301209 , LON : -51.347028 , DEPTH : 982.6378 m, TEMP : 8.32698 C, SAL : 35.22948 PSU, DO : 5.58232 mg/l [13:01:11] LAT : 36.301099 , LON : -51.347002 , DEPTH : 1132.8398 m, TEMP : 6.68467 C, SAL : 35.16786 PSU, DO : 6.53774 mg/l [13:02:27] Siphonophore just went by [13:03:01] Kraken.... [13:03:24] :-) Test to see if anyone is watching [13:03:57] megamouth shark [13:04:34] Fish [13:04:46] Potentially a hatchet fish [13:05:08] larvacean house [13:06:12] LAT : 36.301181 , LON : -51.347025 , DEPTH : 1285.556 m, TEMP : 5.9754 C, SAL : 35.16828 PSU, DO : 7.17233 mg/l [13:11:12] LAT : 36.301122 , LON : -51.347014 , DEPTH : 1431.3748 m, TEMP : 5.01613 C, SAL : 35.05412 PSU, DO : 7.84294 mg/l [13:11:58] christopherknowlton leaves the room [13:16:12] LAT : 36.301127 , LON : -51.346874 , DEPTH : 1579.8751 m, TEMP : 4.84911 C, SAL : 35.07272 PSU, DO : 7.89199 mg/l [13:17:28] morning! what time to the bottom?? [13:17:46] Good morning Tina [13:18:24] about 30 mins to bottom [13:18:30] @Tina: we are doing the dive planning call so you may not get an answer right away. [13:18:34] Or...! [13:18:54] we aim to please :-) [13:21:13] LAT : 36.30107 , LON : -51.346833 , DEPTH : 1729.2609 m, TEMP : 4.53475 C, SAL : 35.04518 PSU, DO : 8.04516 mg/l [13:26:13] LAT : 36.30102 , LON : -51.346716 , DEPTH : 1885.1147 m, TEMP : 4.23474 C, SAL : 35.01584 PSU, DO : 8.15536 mg/l [13:31:13] LAT : 36.300966 , LON : -51.346712 , DEPTH : 2036.8165 m, TEMP : 4.07019 C, SAL : 35.00701 PSU, DO : 8.12252 mg/l [13:31:45] christopherknowlton leaves the room [13:36:14] LAT : 36.300756 , LON : -51.346643 , DEPTH : 2187.166 m, TEMP : 3.88357 C, SAL : 34.98976 PSU, DO : 8.18109 mg/l [13:41:14] LAT : 36.300824 , LON : -51.346639 , DEPTH : 2329.79 m, TEMP : 3.67541 C, SAL : 34.97037 PSU, DO : 8.22455 mg/l [13:43:14] Bottom in sight [13:44:03] EX2104_DIVE06 ROV on Bottom [13:44:46] urchin [13:44:50] ? [13:45:32] Phormosoma placenta? [13:45:45] two of them [13:46:15] LAT : 36.30091 , LON : -51.347355 , DEPTH : 2331.9259 m, TEMP : 3.66187 C, SAL : 34.96802 PSU, DO : 8.24222 mg/l [13:46:46] Look for the baby cusk eels! [13:47:06] Do oyu know if its phormosoma Scott? [13:47:23] No, I followed your lead! [13:47:25] :-) [13:47:29] Will check [13:47:44] desmo skeletons? [13:49:28] pteropod tests in sediment [13:50:15] Too many urchin species! I can only commit to Echinothuriidae [13:50:36] hannahmiller leaves the room [13:50:41] Johndeitz leaves the room [13:51:10] Definitely a pancake urchin [13:51:15] LAT : 36.300916 , LON : -51.347392 , DEPTH : 2332.0577 m, TEMP : 3.66822 C, SAL : 34.96767 PSU, DO : 8.19864 mg/l [13:51:29] Yes, sponge. [13:51:39] Can't recall name at present. [13:52:53] It *should* be called a hedgehog sponge... [13:53:20] I thought it was a nudibranch until we zoomed in! [13:53:31] Do you find these on the Porcupine Abyssal Plain ;-)? [13:53:41] @Dhugal: nice! [13:54:46] kimberlygalvez leaves the room [13:55:08] urchin family Echinothuriidae.. Looked like the Hygrosoma petersi that we get at Bear Seamount. [13:56:15] LAT : 36.300961 , LON : -51.34743 , DEPTH : 2329.3812 m, TEMP : 3.66421 C, SAL : 34.96956 PSU, DO : 8.20562 mg/l [13:56:45] I think that white sponge was a Polymastia... took a while for the name to come to me. [13:57:13] Ah - thank you! [13:57:17] That is what I was trying to recall: Polymastia! Thanks Les. [13:57:43] One of the few sponges I know! [13:58:57] Other Polymastia species are quite common in the Gulf of Maine, into relatively shallow water [14:01:16] LAT : 36.300934 , LON : -51.3475 , DEPTH : 2326.799 m, TEMP : 3.66008 C, SAL : 34.96841 PSU, DO : 8.23736 mg/l [14:01:39] Thanks for the rock! [14:04:13] @kevin, no problem, working with a SOP to get one as soon as possible on landing [14:05:17] That's great. I'm looking forward to seeing a thick carbonate platform today. They were quite distinct on the dives in Line Islands region of Pacific. [14:06:16] LAT : 36.301058 , LON : -51.347539 , DEPTH : 2324.7168 m, TEMP : 3.6593 C, SAL : 34.9705 PSU, DO : 8.26079 mg/l [14:06:34] @kevin...fingers-crossed [14:08:17] We saw carbonate platforms and maybe even some wave cut benches in this area, but at around 800 m. [14:08:53] That would likely sustain a few grad student projects! [14:08:55] We need a big rope to pull it up on board [14:11:06] There is a Japanese ROV that has a rock saw arm attachment. I adore it, looks like a battlebot [14:11:10] michaelvecchione leaves the room [14:11:15] quite excited to see if we observe pavement at the saddle/ledge of the seamount. At Tropic and Rio Grande Rise there were plenty of undercut carbonate platform with thick crusts and plenty of biology living there [14:11:18] LAT : 36.300987 , LON : -51.347644 , DEPTH : 2317.8901 m, TEMP : 3.65106 C, SAL : 34.96891 PSU, DO : 8.19341 mg/l [14:11:33] looks like Sargassum [14:13:08] schmutz! [14:14:40] crinoid? [14:16:17] LAT : 36.300922 , LON : -51.347656 , DEPTH : 2314.2534 m, TEMP : 3.65613 C, SAL : 34.96742 PSU, DO : 8.24628 mg/l [14:16:32] chiton [14:17:37] you can see where he was...the cleared area? [14:17:45] polycete? [14:17:53] this where a flat blade tool would be really handy... [14:18:12] might be sucakble, along with the seastar and brittle star. [14:18:34] *suckable...with a nudge of the manip finger [14:18:58] michaelvecchione leaves the room [14:19:03] yeah @Cindy, and you can see the nice feeding marks [14:20:13] The radulae of chitons are specialized for scraping algae off of rocks and are sometimes mineralized [14:20:22] THankyou James! [14:20:57] Johndeitz leaves the room [14:21:18] LAT : 36.300984 , LON : -51.347713 , DEPTH : 2307.5262 m, TEMP : 3.66772 C, SAL : 34.96902 PSU, DO : 8.21729 mg/l [14:22:22] Thanks Jaymes! [14:22:35] Something hiding out on the sponge [14:22:48] christopherknowlton leaves the room [14:23:12] pretty sure with iron, trying to remember the name of a researcher in the Cal State system that did a lot of work with chitons. As I recall, they were studying the "eyes" that spot chiton's shells. [14:23:45] yeah, its iron. [14:25:29] pretty [14:25:44] Found it, Doug Eernisse and his students have been studying the aragonite lenses found on chiton eyes. Apparently chitons can use them to form images. [14:26:18] LAT : 36.300821 , LON : -51.347774 , DEPTH : 2273.55 m, TEMP : 3.68009 C, SAL : 34.97087 PSU, DO : 8.1959 mg/l [14:26:25] Finally! [14:26:31] :-) [14:26:52] A 3rd coral behind these 2 Irido [14:27:13] @Jaymes, found the species I had heard about! https://www.nature.com/articles/nature09686 [14:29:13] noellehelder leaves the room [14:30:03] leswatling leaves the room [14:30:45] Thanks, @Kimberly! I am going to have to read it. Chitons have some very interesting mineralization and biochemistry. [14:31:19] LAT : 36.300834 , LON : -51.347762 , DEPTH : 2277.6926 m, TEMP : 3.65474 C, SAL : 34.9689 PSU, DO : 8.23901 mg/l [14:34:19] Good predatory strategy to dazzle and mesmerize with beauty! [14:34:41] We are looking at them and others grab us from behind. [14:34:49] kimberlygalvez leaves the room [14:36:18] I think it is a nodal brancher. [14:36:20] LAT : 36.300795 , LON : -51.347829 , DEPTH : 2277.4645 m, TEMP : 3.63885 C, SAL : 34.96814 PSU, DO : 8.22591 mg/l [14:36:55] Johndeitz leaves the room [14:37:02] @Chris: That looked to be just distal to the node. [14:37:34] @Chris: but the angle and opacicity of tissue made it hard to be certain. [14:37:37] Not sure if this is the red comatulid that Meagan Putts thought would be valuable [14:38:06] Chrysogorgia I think [14:38:14] Chrysogorgiid [14:38:28] johndeitz leaves the room [14:39:27] I don't either Scott [14:40:12] I would think an Evoplosoma might have some trouble navigating the fine branches [14:40:20] For sure! [14:40:27] Tight squeeze [14:40:34] Not sure how it would evert its stomach on these branches either [14:41:19] LAT : 36.300835 , LON : -51.347822 , DEPTH : 2273.5994 m, TEMP : 3.61934 C, SAL : 34.96645 PSU, DO : 8.26711 mg/l [14:42:06] Sea cuke to the right of Chryso? [14:42:24] Shrimp in branches of Chryso [14:43:17] cup coral [14:43:58] Agreed Rhian [14:44:25] I think this could be an elpidiid. [14:45:33] That is quite a pin cushion! [14:45:49] I guess its a sponge????? [14:45:50] urchin like we saw yesterday? [14:46:06] How bizarre. [14:46:19] @Cindy: I don't see tube feet... [14:46:21] LAT : 36.300842 , LON : -51.347767 , DEPTH : 2273.4773 m, TEMP : 3.6093 C, SAL : 34.96679 PSU, DO : 8.20901 mg/l [14:46:37] I think it is more likely a sponge, Cindy but I am not completely sure [14:46:39] I dreamt last night that my dog was on the seafloor...picked up a brisingid, let it go. The star plummeted and then began to swim like a jellyfish. Hmmmm [14:46:50] @scott - right not an urchin [14:46:55] What a great dream! [14:47:12] @Cindy: but we understand the motivation! [14:47:28] Perhaps a giant gemmule like structure... [14:47:41] [I don't really believe my last comment] [14:48:17] The horizontal ridges on the arms are characteristic of brinsingids. I don't think freyellids have those if I remember what Chris Mah taught me. [14:48:32] Crinoid [14:48:40] Stalked crinoid [14:48:46] x2 [14:49:51] That one is particularly gorgeous [14:50:10] May have been a xenophyophore to lower right of crinoid [14:50:55] Hmmm, not sure about these sponges [14:51:04] sponge species? [14:51:09] hah - crossed over messages! [14:51:19] I don't know Rhian, not even sure of family [14:51:21] LAT : 36.300753 , LON : -51.347898 , DEPTH : 2268.0851 m, TEMP : 3.61488 C, SAL : 34.96666 PSU, DO : 8.24127 mg/l [14:51:52] Ok, think it is either a farreid or euretid, probably the former [14:52:07] Henricia? [14:52:11] christopherknowlton leaves the room [14:52:16] behind sponge [14:52:21] I felt it was ruffly like a farreid. But I'm no expert. [14:52:43] I think you are right Scott [14:52:45] target for ssample? [14:52:58] Weird stalk [14:53:33] I think it would be a good collection [14:53:47] kimberlygalvez leaves the room [14:53:50] Yellow stalked crinoid is family Hyocrinidae, either Anachalypsicrinus or Gephyrocrinus. The dark red feather star may be an unknown species. [14:53:54] roger that [14:54:31] Any of tose commatulis on this sponge Charles? If so, maybe the sampling could go for a twofer [14:56:21] LAT : 36.300742 , LON : -51.347898 , DEPTH : 2264.9179 m, TEMP : 3.60858 C, SAL : 34.96762 PSU, DO : 8.22233 mg/l [14:56:44] They're going to try - crinoids are hard and suction will destroy the crinoid, so see what happens here. [14:57:05] Yes, please. Very few feather stars known from this depth in this region, and none known to be this color. Usually white, pale yellow, or pale brown and white banded. [14:57:39] jocelyncooper leaves the room [14:58:33] Any tentative ID for both the sponge and the crinoid [14:58:38] It will be a bit brittle [14:59:55] Excellent! [15:00:05] Whoa! Plenty for everyone in that handful! [15:00:09] ...wait...... [15:00:40] Sorry - didn't mean to tempt fate. [15:01:09] this sponge is quite frequently encountered at this depth over the whole of the outer part of the NES, not so much on Corner Rise so this is a good find. [15:01:21] LAT : 36.300734 , LON : -51.347867 , DEPTH : 2264.93 m, TEMP : 3.60635 C, SAL : 34.96685 PSU, DO : 8.25572 mg/l [15:01:58] Intersting that the crinoids do not seem interested in swimming [15:02:07] Wonderful job!!!! [15:02:28] very cool! [15:02:38] Well done! Not all feather stars swim, but I am surprised that these did not. [15:03:11] Maybe the collecting was so calm and smooth, that they didn't realize something was going on [15:03:48] I magnispiralis [15:03:54] kind of ratty looking [15:04:26] lots of exposed axis with hydroids all over [15:04:35] Hey everyone...I see Daniel Woods is on board for a bit this morning. He is a Duke undergrad who has done some great work on brisingid distributions on Pito Seamount. He's also interested in whether brisingids can swim! [15:04:46] a nicer one! [15:04:50] so that does indicate unhealthy? I didn't want to assume [15:05:11] Are any of this ledges wide enough to land and grab the final rock sample? Or is there interest in the potential carbonates further up the dive track? [15:05:13] michaelvecchione leaves the room [15:05:34] Halosaur [15:06:01] This is the one we saw a couple of dives ago. When you were at lunch, Rhian! [15:06:13] We saw this dark one before the silvery one [15:06:17] hah! [15:06:22] LAT : 36.300774 , LON : -51.347971 , DEPTH : 2262.7658 m, TEMP : 3.61683 C, SAL : 34.96635 PSU, DO : 8.2041 mg/l [15:06:29] Had an ID provided but I can't recall name [15:06:49] Maybe another Hallosauropsis? Isn't that what Peter ided the dark one as the other day? [15:06:56] hello! great to be here! [15:07:08] hi daniel [15:07:57] I don't think it is either Aldrovandia or Halosaurus. Don't know the other genera [15:08:07] the first Iridogorgia was probably dying, slowly.... [15:08:12] @ Jason, seems to be a very thick cover of FeMn oxides in this area, If we could get a thick in situ sample of crust, e.g. broken off from a ledge when one shows up, for paleoceanographic reconstruction, it would be great. These samples would complement very nicely the coring going on at the moment on IODP exp395 tracking effect of Iceland plume on NADW exports [15:09:01] kimberlygalvez leaves the room [15:09:08] Isopod? [15:09:10] @pierre, will see what we can do. We have one sample already, had some amount of crust on it [15:09:25] [didn't mean to have the ? there!] [15:09:27] yeah [15:09:36] ok [15:09:44] Alternatopathes? [15:10:14] @jason seemed pretty angular to me but yes i saw it. at 1-3 mm/Ma, every cm of thickness we can get open 10s of Ma of record for us to exploit [15:10:17] @kevin, just saw your request, sorry I missed it earlier [15:11:00] Hi everyone, just an update about the salinity: D2's CTD sensor malfunctioned, but we were able to replace it with Seirios' sensor, so the readings should be within an expected range again. If there are anymore anomalies, please let us know! Thanks! [15:11:08] @Chris: I'm not sure how to distinguish Alternapathes from Bathypathes alternata... [15:11:18] Neither do I [15:11:22] LAT : 36.300807 , LON : -51.348023 , DEPTH : 2257.4876 m, TEMP : 3.62982 C, SAL : 34.96801 PSU, DO : 8.24766 mg/l [15:11:28] upasanaganguly leaves the room [15:11:39] and no Tina today [15:11:49] ophidiid [15:12:01] That is a fighter! [15:12:05] if somebody has link for today dive in seatube? [15:12:13] https://data.oceannetworks.ca/SeaTubeV3?resourceTypeId=600&resourceId=2293 [15:12:21] tinamolodtsova leaves the room [15:12:35] charlesmessing leaves the room [15:12:59] isopod parasite on the fin [15:13:01] Bathypathes it was [15:13:02] @Chris: not a blue hake? [15:13:15] @Tina: thanks? [15:13:32] [there I go with the ? again!] [15:13:42] not in my opinion... blue hake has individual sharp edged fins [15:13:46] I think the fish could be Bassogigas [15:14:11] I thought cusk eel [15:14:39] @thanks scott, works well! I had trouble to find live video button [15:14:56] flat ctenies [15:15:38] @Bathypathes alternata is now Alternatipathes alternata. But it was Bathypathes now under description [15:16:08] Still working on that fish. It had split pelvic filaments [15:16:23] LAT : 36.300888 , LON : -51.348135 , DEPTH : 2254.8507 m, TEMP : 3.63835 C, SAL : 34.96903 PSU, DO : 8.22279 mg/l [15:16:30] Sponge could be Suberites? a demosponge [15:16:45] @scott, but this one was called "B.alternata" for number of years [15:17:39] @Tina: thanks for the explanation [15:17:58] The split filaments on that cusk eel could mean its Spectrunculus, but I don't usually think of them as having a sloped snout [15:18:06] @Tina: do just the Bathypathes have the scale worms? [15:18:20] Cuke poop to left! [15:18:31] bramleymurton leaves the room: Replaced by new connection [15:18:31] [That one was for Art Howard] [15:18:35] a fish guide Peter put together some years ago has it as [15:18:45] Brotulotaenia sp. , cusk eel [15:19:00] I will email it to you @ChrisK [15:19:13] Ok, thanks Les [15:19:59] any chance i could get a copy of Peter's fish guide?? [15:20:09] Gotta go for awhile. Be back later. [15:20:14] christopherkelley leaves the room [15:21:10] noellehelder leaves the room [15:21:23] LAT : 36.300978 , LON : -51.348222 , DEPTH : 2241.1259 m, TEMP : 3.65936 C, SAL : 34.97034 PSU, DO : 8.21375 mg/l [15:22:10] Another "finally!" moment. [15:23:43] @Cindy, and others who might want it, here is a link to the file in my dropbox: https://www.dropbox.com/s/os295cefkt9ucir/A%20Guide%20to%20Some%20Common%20Seamount%20Fishes.pdf?dl=0 [15:24:30] Thanks Les!!! [15:24:43] that mysid needs to be sucked up sometime.... it is always hanging around some of the corals [15:25:27] crinoids behind it [15:25:31] CharlesMessing leaves the room [15:25:59] @Les Thanks [15:26:24] LAT : 36.301 , LON : -51.348303 , DEPTH : 2237.8589 m, TEMP : 3.68059 C, SAL : 34.97115 PSU, DO : 8.19322 mg/l [15:26:28] @Jason how thick is that crust? [15:26:33] @Les: is the brittlestar still named Ophiocreas oedipus? [15:27:15] probably noy more than 5 cm, which is still pretty thick! [15:27:19] yep [15:27:48] hannahmiller leaves the room [15:28:07] @jason - thanks - I guess that would fit with a 1mm/Ma deposition rate [15:28:11] Can you zoom on the sick looking crinoid? [15:28:12] old one, younger one [15:28:14] gordonrees leaves the room [15:28:42] Both appear to be hyocrinids. [15:28:47] kimberlygalvez leaves the room [15:29:51] Never seen such damage to one of these before. One arm shows a bit of pale regeneration, so perhaps there is hope. [15:29:57] may be look more closely to calyces? [15:30:39] Looks from the lava morphology (tubes and elongated pillows) that we are following a lava flow up-slope. [15:30:55] @bram, sure seems that way [15:31:24] LAT : 36.30103 , LON : -51.348468 , DEPTH : 2231.2986 m, TEMP : 3.70047 C, SAL : 34.97354 PSU, DO : 8.17828 mg/l [15:32:53] Unless Chuck now tells me these are worms... [15:32:59] @Scott, we are now starting to see all the common species from the area, now that we are at slightly shallower depth, T is a bit warmer, S seems right.... [15:33:11] Too irregular and scattered for egg masses. Possibly cysts around myzostome worm parasites. [15:33:28] haha! I knew it. [15:35:02] Parantipathes. [15:35:11] may be hirondelle [15:35:33] bramleymurton leaves the room [15:36:25] LAT : 36.301015 , LON : -51.348499 , DEPTH : 2229.9052 m, TEMP : 3.69741 C, SAL : 34.97354 PSU, DO : 8.20208 mg/l [15:36:53] Can you zoom in on that smaller crinoid? [15:36:56] anothes crinoid) [15:37:18] fun [15:37:31] First of that type, I believe [15:37:34] yellow stalk with red pinnules [15:37:38] collection?? [15:37:53] We're on the move... [15:37:58] pink one??? [15:38:16] it is not fair - either CITES or move [15:38:21] we collected one (same/similar?) yesterday too. [15:38:33] that last crinoid is new for the area as far as we know [15:38:34] kelseyviator leaves the room [15:38:46] Possibly Zeuctocrinus gisleni, but it is only known from the NE Atlantic. [15:40:32] The yellow stalked crinoid below left may have gonads. [15:41:26] LAT : 36.300975 , LON : -51.348634 , DEPTH : 2221.9988 m, TEMP : 3.75006 C, SAL : 34.97783 PSU, DO : 8.18406 mg/l [15:42:04] always a nice shot! [15:43:21] Another really chewed-up hyocrinid. [15:44:01] some fish eare eating crinoids? [15:44:10] johndeitz leaves the room [15:45:29] Tina - in shallow water, yes. Deep-sea crinoid predators include sea stars and urchins. [15:45:46] Can you zoom in on the little crinoid left of the bamboo coral? [15:45:50] pz-polyps on these bamboo [15:45:58] I think the first time I've seen a snail on a live bamboo coral... [15:46:07] that thruster blast showed a different polyp morphology than have seen before, but didn't get a real good look [15:46:15] Apologies - too much going on and missed the request [15:46:27] LAT : 36.300974 , LON : -51.348721 , DEPTH : 2216.403 m, TEMP : 3.75324 C, SAL : 34.97819 PSU, DO : 8.16595 mg/l [15:46:51] noellehelder leaves the room [15:47:04] sometimes you need the contracted or partially contracted polyp to really know who it is, or is likely to be [15:47:53] zoom coral under the sponge [15:48:16] No worries. Would it be appropriate to grab one of the yellow stalked crinoids as a dominant component of the local fauna? My colleague Michel Roux, who is the hyocrinid expert, says that there might be a second species of Anachalypsicrinus in the NW Atlantic. [15:49:32] agree for Parantipathes [15:50:29] Just wonder, if Gastropoda can induce such a damage? [15:50:51] can we measure Iridogorgia? [15:51:27] LAT : 36.300971 , LON : -51.348856 , DEPTH : 2208.216 m, TEMP : 3.76381 C, SAL : 34.97944 PSU, DO : 8.14374 mg/l [15:51:33] I have seen gastropods on stalked crinoids but never such damage. [15:51:46] Hence the common name, Sea Lillies! [15:52:04] All members of Hyocrinidae have five unbranched arms except one species from the East Pacific. [15:52:38] Metallogorgia? [15:52:41] Another Metallogorgia...? [15:53:00] they are not so common here? [15:53:03] leswatling leaves the room [15:53:04] Looks ore like a Chrysogorgia [15:53:16] there is another one behind [15:53:28] The yellow hyocrinid below right of the coral appears to have well developed gonads. [15:54:41] vondawarehamhayes leaves the room [15:54:42] there is a small crinoid as well [15:55:00] Looks like a perfectly sheared surface... [15:55:10] That's the broken holdfast of a hyocrinid. [15:55:33] @Chuck: it looked so big! [15:55:35] probably Chrysogorgia averta [15:56:23] purple crinoid [15:56:25] tends to drop the lower branches [15:56:29] LAT : 36.300926 , LON : -51.348953 , DEPTH : 2201.401 m, TEMP : 3.78316 C, SAL : 34.98 PSU, DO : 8.18014 mg/l [15:56:52] love to log on for the first time in the day and see a zoom on those big fat botryoids on the crusts :) [15:56:52] cindyvandover leaves the room [15:57:18] we aim to please :-) [15:58:52] jillbourque leaves the room [15:58:57] michaelvecchione leaves the room [15:59:28] Likely protist... [15:59:30] Radiolaria? [15:59:43] it was LOVELY [15:59:45] @scott: I could not tell its size, but the smooth flat circular top with a central pore looked just like a holdfast. [16:00:17] @Chuck: thanks. That would explain the absence of a large skeleton just below it. [16:00:59] tyny crinoid at the base of left yellow one [16:01:29] LAT : 36.300978 , LON : -51.348998 , DEPTH : 2200.7195 m, TEMP : 3.79 C, SAL : 34.98058 PSU, DO : 8.16181 mg/l [16:02:37] @Scott: I should have said holdfast articulation (on the top of the holdfast itself). [16:02:59] kelseyviator leaves the room [16:03:36] haroldcarlson leaves the room [16:04:26] @Chuck: but it must not have been from one of these yellow ones; those holdfasts look too small. Perhaps that earlier robust one that had red arms and yellow stalk... [16:04:50] kiramizell leaves the room [16:05:02] kimberlygalvez leaves the room [16:05:39] can we snap zoom in the edge of the crust where is has broken off please? [16:05:46] I dated a 16 cm crust back to 75 Ma! [16:06:05] iscwatch leaves the room [16:06:08] zooming now Bram [16:06:21] thnaks R [16:06:30] LAT : 36.3009 , LON : -51.349083 , DEPTH : 2195.8327 m, TEMP : 3.80435 C, SAL : 34.98253 PSU, DO : 8.13474 mg/l [16:06:47] and with laser sacel [16:07:17] thanks Scott [16:07:21] excellent - thanks [16:07:38] @Scott: Certainly possible. [16:07:42] Speaking, reading and thinking may be all too much for me :-) [16:08:07] leswatling leaves the room [16:08:50] vondawarehamhayes leaves the room [16:10:09] The crusts record changes in water mass, and especially at this location, changes in NADW over millions of years. Any sample of that crust here would be great as it would tie into the current IODP Exp 395B (currently drilling south of Iceland) to test the 'heartbeat of the Iceland plume' that has turned on and off NADW formation strength on a 4Ma time-scale for the past 25 Ma. [16:10:14] At least superficially similar to Alcockianum: https://www.ncei.noaa.gov/waf/okeanos-animal-guide/Cirripedia016.html [16:10:39] cindyvandover leaves the room: Replaced by new connection [16:10:54] I agree, mybe we can snapp a piece from the ledge, crust is friable so probably doable? [16:11:31] LAT : 36.300873 , LON : -51.349043 , DEPTH : 2193.1853 m, TEMP : 3.80807 C, SAL : 34.98358 PSU, DO : 8.13622 mg/l [16:12:06] Apologies - I thought you were zooming on Chryso - no need to for me [16:12:48] michaelvecchione leaves the room [16:13:01] @Bram/@pierre, we will attempt a crust sample on the next suitable site we can land and there is a nice crusty edge...please shout out if you see one [16:13:07] If any chance occurs, can you collect one of the yellow stalked crinoids? I can find no records of this family from the NW Atlantic, except for some out-of-focus video off Greenland. [16:13:11] cindyvandover leaves the room [16:13:30] The little pale stalked crinoid is likely Bathycrinidae. [16:14:12] @Jason that would be really fantastic. The pilots managed to break a piesce of crust ledge on Dive 1 (or was it 2?) so it would be great to try another! :-) [16:15:26] is that a crust ledge here? [16:15:48] just movien off the left [16:15:57] they see it [16:16:04] √ [16:16:17] yes this area looks promising [16:16:19] Guys did a great job the other day! [16:16:31] LAT : 36.300885 , LON : -51.349229 , DEPTH : 2192.1073 m, TEMP : 3.82719 C, SAL : 34.98284 PSU, DO : 8.16238 mg/l [16:16:39] top of the ledge could snap [16:16:41] just below the sponge [16:17:08] That sponge looks like a discarded peice of wedding cake... [16:17:14] @Chuck, Jon Moore wrote something about those yellow stalked crinoids a decade or so ago, or maybe it was just a presentation abstract [16:18:48] its going to need a bit of force to snap it off......I guess.... [16:20:37] kelseyviator leaves the room [16:20:41] Okidoki - thanks for trying - maybe another ledge elsewhere? [16:21:05] Keep eyes open on the top of your screens - so with the delay we'll have time to stop for it. [16:21:32] LAT : 36.300897 , LON : -51.349201 , DEPTH : 2191.6339 m, TEMP : 3.86375 C, SAL : 34.9759 PSU, DO : 8.12396 mg/l [16:22:32] @ Jason Chaytor are there any condistions under FeMnO crusts dissolve? [16:22:59] Little Cyclothone? [16:23:51] noellehelder leaves the room [16:24:03] IGoogly eye sponge... [16:24:16] dhugallindsay leaves the room [16:24:28] @Bob I am not aware of any, beyond physical abrasion. [16:24:33] Farreid wrapped around an old stalk... [16:24:42] the crusts are redox sensitive, so they precipitate more where the water has higher oxygen content, Conversely, when there is oxygen minima, crusts can dissolve. It can also get replaced by phsophorite under conditions of high surface biological productvitty [16:24:53] there you go! [16:25:07] thanks @Bram [16:25:36] Wouldn't it be great to have telepresence wherever we went, so you could always get a question answered?! [16:25:55] or much bigger research vessels [16:25:59] Thanks... so sometimes the presence refects an equiplibrium [16:26:32] LAT : 36.300956 , LON : -51.349461 , DEPTH : 2186.9805 m, TEMP : 3.84447 C, SAL : 34.98448 PSU, DO : 8.12556 mg/l [16:26:36] Rattail? [16:26:42] yes [16:26:45] /grenadier [16:26:46] I am amazed at how many fascinating bits of info come in from so many different disciplines. I am certainly learning a lot. [16:26:52] @Les: I will have to search, but that reference does not sound familiar. Will dig. My most recent reference for N Atlantic deep crinoids is 2014, focused on NE Atlantic but would have mentioned NW Atlantic as part of distributions. [16:27:00] roundnose grenadier? [16:27:03] leswatling leaves the room [16:28:40] @Rob, the crusst grow ~~1mm.million years so they record changes in bottom water conditions over millions of years. @Pierre has records going back ~~80 million years from a seamount in the NE Atlantic [16:29:30] danielwoods leaves the room [16:31:33] LAT : 36.300959 , LON : -51.349464 , DEPTH : 2180.3587 m, TEMP : 3.84303 C, SAL : 34.98342 PSU, DO : 8.11273 mg/l [16:31:48] And sometimes we think we are going to see X and then are surprised to find Y! [16:33:13] Lots of mud stick amphipods on the wall face there [16:33:30] apropos of Ocean Exploration...OE has changed the way "everyone" thinks about the deep sea because the imagery is so exquisite - shout-out to the techs and operators -- AND its freely available, so we see them on news feeds etc. [16:33:56] @Cindy: well said! This is how you change public perception and opinion. [16:34:18] kelseyviator leaves the room [16:36:11] iscwatch leaves the room [16:36:34] LAT : 36.300887 , LON : -51.349521 , DEPTH : 2182.7833 m, TEMP : 3.84347 C, SAL : 34.98394 PSU, DO : 8.15727 mg/l [16:37:00] kevinkonrad leaves the room [16:37:56] noellehelder leaves the room [16:38:21] @Scott/@Cindy: I have developed a treatment for a video miniseries on the history of deep-sea exploration called "Discovery of the Deep" but I am not connected to the media industry and so have not found any interested production company. A brief version is at https://www.charlesmessing.com/discovery-of-the-deep-proposed. Suggestions from all are welcome. [16:39:17] @Chuck: they lack vision! [16:39:23] the link is not working .. :( [16:40:07] @upasana: take out the final period [16:40:26] okay...thanks [16:41:34] LAT : 36.300883 , LON : -51.349409 , DEPTH : 2182.7589 m, TEMP : 3.83192 C, SAL : 34.98296 PSU, DO : 8.14757 mg/l [16:41:45] Preparing to suction fossil cup corals and sediments. [16:42:39] vondawarehamhayes leaves the room [16:45:49] tinamolodtsova leaves the room [16:46:04] Have to sign off. This has been a great dive. Thanks. [16:46:14] THanks Chuck! [16:46:17] kelseyviator leaves the room [16:46:34] LAT : 36.300893 , LON : -51.349354 , DEPTH : 2182.7443 m, TEMP : 3.76503 C, SAL : 34.97634 PSU, DO : 8.16548 mg/l [16:49:07] kelseyviator leaves the room: Replaced by new connection [16:51:35] LAT : 36.300845 , LON : -51.349625 , DEPTH : 2182.8134 m, TEMP : 3.73543 C, SAL : 34.97665 PSU, DO : 8.14658 mg/l [16:53:08] As a parting note (thanks to Bob Carney for the suggestion), the abundance of stalked crinoids on this dive calls to mind their importance in the history of deep-sea exploration. In the middle 19th century, with the idea of the azoic zone--the idea of a lifeless deep sea--hotly debated, a small stalked crinoid dredged up off Norway's Lofoten Islands, was thought to closely resemble ancient fossil crinoids and triggered the idea of a deep sea populated with living fossils. The discovery interested Charles Wyville Thomson (University of Edinburgh) and W. B. Carpenter (Royal Society) to petition the British Admiraly for a ship to explore and sample the deep sea. Their endeavors (or endeavours) in the 1860s aboard HMS Lightning and Porcupine led directly to the Challenger Expedition. [16:54:04] noellehelder leaves the room [16:54:18] @Chuck: awesome. Thanks for that. [16:54:26] leswatling leaves the room [16:55:25] that is so interesting ! [16:55:57] Couple of minor grammatical errors there. Sorry. The discovery interested Thomson and Carpenter AND LED THEM to petition the Admiralty. So, I'm picky. So sue me. :) [16:56:35]