[10:29:42] DIVE09 test message from the Okeanos Explorer [11:41:23] EX2104_DIVE09 ROV powered off [12:29:35] EX2104_DIVE09 ROV Launch [12:37:31] EX2104_DIVE09 ROV on Surface [12:38:51] EX2104_DIVE09 ROV Descending [12:39:21] LAT : 35.177788 , LON : -48.116708 , DEPTH : 19.4201 m, TEMP : 25.26698 C, SAL : 36.33025 PSU, DO : 7.06759 mg/l [12:44:21] LAT : 35.180603 , LON : -48.115611 , DEPTH : 55.8335 m, TEMP : 18.48304 C, SAL : 36.04612 PSU, DO : 8.03913 mg/l [12:49:22] LAT : 35.182844 , LON : -48.114117 , DEPTH : 56.2027 m, TEMP : 18.84563 C, SAL : 36.08205 PSU, DO : 8.07754 mg/l [12:50:16] jocelyncooper leaves the room [12:54:23] LAT : 35.183 , LON : -48.113955 , DEPTH : 154.0637 m, TEMP : 16.56536 C, SAL : 36.08834 PSU, DO : 7.152 mg/l [12:59:23] LAT : 35.183155 , LON : -48.114023 , DEPTH : 293.2262 m, TEMP : 12.58223 C, SAL : 35.48295 PSU, DO : 5.73729 mg/l [12:59:31] stevenauscavitch leaves the room [13:04:24] LAT : 35.183168 , LON : -48.114363 , DEPTH : 434.9624 m, TEMP : 9.34855 C, SAL : 35.18633 PSU, DO : 5.24307 mg/l [13:09:24] LAT : 35.183083 , LON : -48.114692 , DEPTH : 586.5027 m, TEMP : 6.92146 C, SAL : 35.09045 PSU, DO : 6.24865 mg/l [13:14:25] LAT : 35.182811 , LON : -48.114892 , DEPTH : 684.9226 m, TEMP : 6.7396 C, SAL : 35.21084 PSU, DO : 6.79348 mg/l [13:16:53] elizabethfraser leaves the room [13:19:25] LAT : 35.182445 , LON : -48.115197 , DEPTH : 685.3813 m, TEMP : 6.7669 C, SAL : 35.21455 PSU, DO : 6.79046 mg/l [13:21:31] noellehelder leaves the room: Replaced by new connection [13:23:26] noellehelder leaves the room [13:24:26] LAT : 35.1822 , LON : -48.115602 , DEPTH : 739.9824 m, TEMP : 6.06352 C, SAL : 35.12048 PSU, DO : 7.17926 mg/l [13:29:26] LAT : 35.182026 , LON : -48.115923 , DEPTH : 886.29 m, TEMP : 5.59255 C, SAL : 35.13679 PSU, DO : 7.60385 mg/l [13:30:18] noellehelder leaves the room [13:30:39] @915m depth (target 1360m depth) [13:33:06] noellehelder leaves the room [13:34:22] noellehelder leaves the room [13:34:27] LAT : 35.18172 , LON : -48.116067 , DEPTH : 1034.5011 m, TEMP : 4.62998 C, SAL : 35.0124 PSU, DO : 8.23255 mg/l [13:38:55] vondawarehamhayes leaves the room [13:39:28] LAT : 35.181547 , LON : -48.116248 , DEPTH : 1193.8639 m, TEMP : 4.50088 C, SAL : 35.00848 PSU, DO : 8.26867 mg/l [13:44:28] LAT : 35.181504 , LON : -48.116274 , DEPTH : 1287.4396 m, TEMP : 4.38729 C, SAL : 34.99696 PSU, DO : 8.3684 mg/l [13:49:29] LAT : 35.18111 , LON : -48.116462 , DEPTH : 1294.8568 m, TEMP : 4.39874 C, SAL : 34.99823 PSU, DO : 8.34491 mg/l [13:49:43] @Kira Hi Kira, i liked your last paper on the pacific FeMn crusts! :-) [13:51:08] emilycrum leaves the room [13:54:30] LAT : 35.180918 , LON : -48.116591 , DEPTH : 1312.4994 m, TEMP : 4.34166 C, SAL : 34.99212 PSU, DO : 8.37573 mg/l [13:56:11] 30m off bottom [13:56:56] vondawarehamhayes leaves the room [13:57:05] bottom in sight [13:58:09] EX2104_DIVE09 ROV on Bottom [13:59:31] LAT : 35.180954 , LON : -48.116631 , DEPTH : 1366.0437 m, TEMP : 4.44389 C, SAL : 35.03009 PSU, DO : 8.22424 mg/l [14:03:49] haroldcarlson leaves the room [14:03:49] kelseyviator leaves the room [14:04:32] LAT : 35.180975 , LON : -48.116662 , DEPTH : 1365.8823 m, TEMP : 4.42815 C, SAL : 35.02656 PSU, DO : 8.23776 mg/l [14:05:22] bramleymurton leaves the room [14:09:09] bramleymurton leaves the room [14:09:25] synaphobranchid [14:09:32] LAT : 35.180954 , LON : -48.116556 , DEPTH : 1363.9604 m, TEMP : 4.39335 C, SAL : 35.01673 PSU, DO : 8.29427 mg/l [14:13:41] beware of drop stones if the rocks are rroundedand smooth [14:14:33] LAT : 35.180895 , LON : -48.116758 , DEPTH : 1363.6554 m, TEMP : 4.41169 C, SAL : 35.02343 PSU, DO : 8.26066 mg/l [14:14:37] @kira: I agree its not in situ [14:15:13] @rhain what abnout a sample from the edge of the ledge to the left ? [14:15:52] haroldcarlson leaves the room [14:16:13] maybe not igneous but definitely in-situ [14:16:45] kimberlygalvez leaves the room [14:16:45] if encrusted carbonates, might be easier to break compared to the deeper basalt [14:18:04] good point Pierre. iss it a carbonate pavement or Femn crust pavement? [14:19:00] just to the left is a thinner bit of the ledge - sampling opp? [14:19:32] mostly carbonates, not much crust [14:19:35] LAT : 35.180894 , LON : -48.116708 , DEPTH : 1362.973 m, TEMP : 4.46101 C, SAL : 35.03371 PSU, DO : 8.22375 mg/l [14:19:45] useful for dating the sediment cap though [14:19:56] They're going to poke around and see if any can break [14:20:18] the ledge on the left with the yellow stuff looks promising [14:21:20] it wont swin away! [14:21:46] great! [14:21:50] well done folks [14:22:56] vondawarehamhayes leaves the room [14:23:12] carbonate! [14:23:33] good for dating! [14:24:22] johndeitz leaves the room [14:24:34] LAT : 35.180917 , LON : -48.116695 , DEPTH : 1363.856 m, TEMP : 4.47113 C, SAL : 35.03434 PSU, DO : 8.18531 mg/l [14:26:22] corallimorpharians yes I agree Rhian [14:26:39] They also tend to have transparent tissue [14:27:09] seems like a high energy environment here, not surprised to see undercut carbonate platforms [14:27:24] tidal energy maybe? [14:28:46] @Rhian pinnacles are very strange.......mioght be worth a ssnap-zoom... [14:29:35] LAT : 35.181078 , LON : -48.116425 , DEPTH : 1364.999 m, TEMP : 4.43134 C, SAL : 35.02967 PSU, DO : 8.16837 mg/l [14:30:00] IF we come across some again Bram we will - didn't see this. We had a fairly close view on landing too [14:30:05] black dogfish [14:30:05] noellehelder leaves the room [14:30:23] In adsence of Peter, that shark could have been in the Etmopteridae [14:30:44] bramleymurton leaves the room [14:30:45] Peter, ok see you are here. What family please? [14:31:25] saw lot's of those at Rio Grande Rise [14:32:50] what is the blue coral? [14:33:14] amazing colour [14:34:04] agree with Rhian, but could be Victorgorgiidae. However, her guess of plexaurid is better [14:34:13] has texture of a lot of the carbonates/limestones I have come across, I have seen phosphorites displaying a similar texture, but those don't break as easily as the sample on did [14:34:30] @chris ... sorry on a telecon while doing this ... Etmopteridae [14:34:35] LAT : 35.180844 , LON : -48.116528 , DEPTH : 1364.1924 m, TEMP : 4.41103 C, SAL : 35.02634 PSU, DO : 8.25345 mg/l [14:34:44] dropstone? [14:35:38] No problem, Thanks Peter [14:36:02] echinothuriid urchin [14:36:16] The 'drop stones' have an erosional moat around them indicating high current energy at times. [14:36:18] Hygrosoma? [14:36:34] Thin spines that are bendable are a couple of the diagnostics [14:36:46] beautiful worm [14:37:26] that blue-ish coral I think was one we called purple plexaurid, collected a bit higher on this seamount. It turned out to be a strange paramuriceid, without thornscales and large flat scales in the coenenchyme [14:37:36] surprising how coarse the sediment here is - looks almost like its made of macro-faunal carbonate debris [14:37:58] winnowed for sure [14:39:28] Stichopathes [14:39:34] glass sponge but can't go further than that. Stichopathes [14:39:35] I can check Scott's data base and see what the gene result was [14:39:38] LAT : 35.180627 , LON : -48.116461 , DEPTH : 1362.1702 m, TEMP : 4.47151 C, SAL : 35.03793 PSU, DO : 8.18365 mg/l [14:39:39] @tina - yay! [14:40:43] hey [14:42:44] yes, rattail or grenadier [14:43:01] Why can we not completely identify what species those cup corals are? [14:43:28] pierrejosso leaves the room [14:43:34] Anal fish is more prominent than dorsal fin, which is one of the diagnostics for that group [14:43:55] noellehelder leaves the room [14:43:58] @jocelyn - you need to see their skeletons completely [14:44:37] LAT : 35.180449 , LON : -48.116475 , DEPTH : 1360.0238 m, TEMP : 4.47135 C, SAL : 35.03705 PSU, DO : 8.19046 mg/l [14:46:12] Leiopathes [14:46:14] seastar [14:46:30] Munidopsis [14:46:55] I guess the star is a brisingida, but not very many arms [14:47:25] fish [14:47:34] Is there a scarp coming up? [14:47:59] I am wondering if some of these more angular rocks have fallen off from up ahead? [14:48:23] jillbourque leaves the room [14:48:30] demosponge but not sure what family [14:48:50] could be a tunicate also [14:48:55] vondawarehamhayes leaves the room [14:49:38] LAT : 35.180344 , LON : -48.116381 , DEPTH : 1362.007 m, TEMP : 4.47658 C, SAL : 35.03941 PSU, DO : 8.17686 mg/l [14:49:45] what is that?! [14:50:30] plate sponge could be a Poecillastra I guess but doesn't have fringe along edge [14:50:54] kelseyviator leaves the room [14:51:12] wow look at that jelly [14:51:23] lovely [14:51:49] does anyone know why this seamount is named Yakutat? I know Yakutat from Alaska...(Tlingits)...or elsewhere on the internet,Yakutat is said to mean "the place where the canoes rest" hmmmm [14:52:35] crassota? [14:52:37] can't tell if its hydrozoan or scyphozoan [14:52:47] hydrozoa [14:53:01] it is Little Red Jelly [14:53:06] @Cindy, maybe back in the Iceage when sealevel was 120 m lower........? OK, maybe now ! [14:54:05] leswatling leaves the room [14:54:31] thanks for the etymology [14:54:38] LAT : 35.180234 , LON : -48.116364 , DEPTH : 1359.3719 m, TEMP : 4.42325 C, SAL : 35.02646 PSU, DO : 8.21943 mg/l [14:55:52] Its very strange how these isolated chunks of angular and vuggy (full of holes) rock are just sitting here on the seafloor. If not drop stones, then its as if they have fallen from above. [14:56:00] did anyone notice the very flat disk white echinoderm next to the little red jelly? [14:56:20] Yes @ Cindy! Really cool, good shots of that too! [14:56:32] any idea what it is? [14:56:41] what we called the purple plexaurid was collected from near here at 1426 m. We knocked it over when trying to cut a piece off so I have the whole 1.3 m fan in my office here. [14:57:03] hydrozoan, tentacles coming out from the fringe [14:57:25] johndeitz leaves the room [14:57:40] enallops? [14:57:50] @bram...fallen from above, or they are all that is left after the rest was abraded away [14:57:53] looks like [14:57:56] can we snap-zoom that rock please [14:58:57] vondawarehamhayes leaves the room [14:59:03] noellehelder leaves the room [14:59:39] LAT : 35.18007 , LON : -48.116361 , DEPTH : 1354.4723 m, TEMP : 4.38597 C, SAL : 35.01604 PSU, DO : 8.27455 mg/l [14:59:41] @Kira - another boulder of carbonate yopu think? [14:59:51] looked like a very recently settled Chrysogorgia [15:00:05] looked that was to me with all of the holes/bumps. [15:00:28] but look at these two rocks, very different [15:00:32] may be boy and girl? [15:00:42] There are big beds of these in the central Pacific in some places [15:00:52] I don't know what they mounded rocks are... [15:02:15] This is pretty deep for this yellow morph here in the Atlantic whereas these are mostly seen around 500-700 m in the Pacific. The deeper morph is generally white and has a more pronounced rostrum on the calyces [15:03:00] Interesting @Chris - we've seen this yellow at aroud 1200m before (i'd have to scroll back through my notes for an exact) [15:03:22] agree @Rhian, and in moderately high numbers [15:03:39] Maybe because of the lack of an OMZ here in the Atlantic? [15:04:12] christophermah leaves the room [15:04:14] yeah, it may be T that limits their downward extent, or food (F)... [15:04:28] there is something with carbonate saturation level that is shallower in Pacific [15:04:40] LAT : 35.179804 , LON : -48.11643 , DEPTH : 1350.1004 m, TEMP : 4.40067 C, SAL : 35.02094 PSU, DO : 8.23345 mg/l [15:04:55] as far as I know [15:05:17] noellehelder leaves the room [15:05:20] shark bite mark? [15:05:25] The broken lateral line pores is a clue. Need to look back at references to remember who has that [15:05:58] looks like an old dude, missing some part of dorsal fin [15:06:04] Ah, could be a bythitid [15:06:08] a zoarcid ... we've sen these before. The scrapes and scartches suggest it does alot of foraging around sediment-rock edges [15:06:18] like 500m deeper in Atlantic [15:06:35] oops, sorry for the bad id. Peter would of course know this better [15:06:41] "seen" these before .... scrapes and "scratches" [15:07:00] same as in 2004? [15:07:22] jillbourque leaves the room [15:07:26] @chris ... I just sound like I know better ... what do you think? [15:07:53] elizabethfraser leaves the room [15:08:12] Peter, what do you think of the broken lateral line? Do zoarcid have that also? [15:08:26] I think that Chryso was C. tricaulus [15:09:27] will we have a wall? [15:09:31] thanks Les [15:09:34] @chris ... they can ... need to go back and look at earlier images from here [15:09:40] LAT : 35.179743 , LON : -48.116423 , DEPTH : 1349.4743 m, TEMP : 4.38536 C, SAL : 35.01477 PSU, DO : 8.26373 mg/l [15:09:55] Yes @Tina - strong current so they're going slow [15:10:05] thanks! [15:10:13] Ok, thanks haven't seen hardly any zoarcids in the pacific [15:11:23] Coelorhinchus perhaps [15:12:19] That genus of macrourids typically have that very sharp shovel shaped nose [15:12:50] That's really pointy! [15:12:51] stevenauscavitch leaves the room [15:13:58] kimberlygalvez leaves the room [15:14:09] Sphagemacrurus? [15:14:41] LAT : 35.179586 , LON : -48.116473 , DEPTH : 1342.0691 m, TEMP : 4.38167 C, SAL : 35.0125 PSU, DO : 8.26793 mg/l [15:14:43] Need to look this one up ... hope we got a good frame capture! [15:15:18] we should @Peter - they got some great video [15:17:17] what is that sediment? [15:17:52] mashkoormalik leaves the room [15:17:52] coral debris... [15:17:55] vondawarehamhayes leaves the room [15:18:04] yes, was just going to say that [15:18:18] Peter, the one species of Sphagemacrurus in the Pacific doesn't have such a sharp pointy nose. But I don't know if other species in that genus might [15:18:20] its a lot of coral debris! [15:18:46] thinking it's like yesterday - paleo reef platform [15:19:15] Yes! exactly. but now all dead (for thousands of years) [15:19:42] LAT : 35.179441 , LON : -48.116462 , DEPTH : 1330.3094 m, TEMP : 4.38249 C, SAL : 35.01353 PSU, DO : 8.27251 mg/l [15:20:22] or hundreds of thousands... we found dead Desmophyllum that was 250k years old... Rhian can correct me. [15:20:29] noellehelder leaves the room [15:20:53] Yes, I think some of the oldest were 250K, some of the younger 10K [15:21:00] seastar [15:21:45] kimberlygalvez leaves the room [15:22:45] I don't remember the exact literature, maybe DSDP report, but I recall reading that the carbonate reefs on some of these seamounts are Eocene in age. Is that right? [15:24:33] looks more like Periphylla [15:24:37] I will have to check on that, Les. Alvin collected some carbonate rocks that were labeled as Quaternary but not sure how accurate that is. [15:24:43] LAT : 35.179377 , LON : -48.116714 , DEPTH : 1323.6958 m, TEMP : 4.37946 C, SAL : 35.00867 PSU, DO : 8.29698 mg/l [15:24:57] as least scypho - but I may be well wrong [15:25:05] @les, perhaps not as old here in the corner rise, but I don't know that any of the roere actually properly dated using fossils [15:25:24] possibly miocene-ish [15:26:31] carbonate outcrop [15:26:33] thanks [15:27:16] complex surface that has been abraded ? [15:28:17] curious though how to get these larger scale bumps in carbonate? [15:28:44] variety of erosional processes [15:29:27] physical abrasion, bioerosion...not sure about chemical dissolution [15:29:44] LAT : 35.179321 , LON : -48.116795 , DEPTH : 1319.4804 m, TEMP : 4.38249 C, SAL : 35.00728 PSU, DO : 8.26688 mg/l [15:31:26] anemone is a Actinoscyphia [15:32:11] leswatling leaves the room [15:33:05] Tina is this a sticho? [15:33:18] Polps on one side [15:33:21] noellehelder leaves the room [15:33:55] vondawarehamhayes leaves the room [15:34:33] Wonder why we are seeing so many of these enallops all in this area?! [15:34:44] LAT : 35.17936 , LON : -48.116877 , DEPTH : 1317.9703 m, TEMP : 4.37919 C, SAL : 35.0087 PSU, DO : 8.29782 mg/l [15:35:27] urchin? [15:35:55] @Jason @Kira: are we looking at a headwall scarp [15:36:24] or pedinid? Chris M? [15:36:47] 2 sizes of spines [15:37:09] leswatling leaves the room [15:37:49] I'd say that's a good guess, @Bram [15:37:57] maybe.. the spines have those blunt tips [15:38:06] the anus also had a fringe of spnes around it [15:38:24] @bram, I don't think it is a failure headwall, rather a sculpted plateau/pavement cap [15:38:28] its certainly remarkably smooth [15:38:34] so cidarid or pedinid in your opinion Chris M? [15:39:13] just the high currents causing smoothing maybe? [15:39:44] LAT : 35.179251 , LON : -48.116881 , DEPTH : 1303.1703 m, TEMP : 4.39032 C, SAL : 35.00927 PSU, DO : 8.27254 mg/l [15:39:48] chunky sponge [15:40:19] vondawarehamhayes leaves the room [15:40:27] euretid maybe. hard to say. [15:40:37] looking at the bathymetry, there is almost a moat eroded around the western side of this high [15:40:38] honestly I'm not sure.. less convinced that it is cidaroid. we saw small one of this type earlier next to jelly [15:41:16] @Chris - thanks! I'll try adn see if there is another one to zoom into! [15:41:30] pierrejosso leaves the room [15:41:46] kelseyviator leaves the room [15:44:11] etmopterid [15:44:45] LAT : 35.179193 , LON : -48.116848 , DEPTH : 1292.8482 m, TEMP : 4.38255 C, SAL : 35.01197 PSU, DO : 8.28888 mg/l [15:46:32] @Jason, one of the things we should remember is that the top of this seamount was subaerial. So, it is likley there would have been erosion an transport of sediment from the exposed top and down the flanks forming eroded channelised structures. [15:48:45] noellehelder leaves the room [15:49:23] hannahmiller leaves the room [15:49:45] LAT : 35.17918 , LON : -48.11694 , DEPTH : 1294.9415 m, TEMP : 4.38613 C, SAL : 35.01208 PSU, DO : 8.29188 mg/l [15:51:49] @Rhianwaller we saw some small white urchins on the rocks next to the jellies awhile back.. they look like this https://www.ncei.noaa.gov/waf/okeanos-animal-guide/EchinoideaOther046.html [15:52:19] Pentametrocrinus [15:52:26] if you see some small white spiny things on the rocks.. it would be interesting to see those. [15:54:46] LAT : 35.179145 , LON : -48.116881 , DEPTH : 1294.7135 m, TEMP : 4.38492 C, SAL : 35.01346 PSU, DO : 8.26222 mg/l [15:55:22] Tina ided these as Pentametrocrinus [15:56:02] No idea very blunt head and defined caudal fin [15:56:07] @Tina - is that the crinoid ID? [15:56:11] vondawarehamhayes leaves the room [15:56:43] I agree wth Tina's id. Looks exactly like Pentametrocrinus from the pacifc [15:57:03] seastar [15:57:31] @Kimberly, Chuck yesterday tell this name, it is only one commatulid with 5 arms to my knowledge) [15:57:48] poronidae) [15:57:57] I am learning) [15:58:08] Oh nice! Thanks Tina [15:58:59] upasanaganguly leaves the room [15:59:46] LAT : 35.179042 , LON : -48.116901 , DEPTH : 1287.3115 m, TEMP : 4.37704 C, SAL : 35.01198 PSU, DO : 8.26254 mg/l [16:00:24] If we see another one of those seastars, can you collect maybe with suction sampler? [16:00:28] he even told "possibly atlanticus" than this one http://www.marinespecies.org/aphia.php?p=taxdetails&id=124238 [16:01:04] bramleymurton leaves the room [16:01:26] christophermah leaves the room [16:04:13] ah, thanks Tina. Follow up on Chris M's comments on urchin. When we first collected it off the Nautilus in 2018, Rich Mooi at CAS thought it could be a new family. When we got the specimen, he determined that it was Habrocidaris from a single specimen collected by trawling back in 1902 or thereabouts. It's a really cool urchin [16:04:46] LAT : 35.179071 , LON : -48.116828 , DEPTH : 1285.5551 m, TEMP : 4.37511 C, SAL : 35.0117 PSU, DO : 8.26789 mg/l [16:05:25] peterauster leaves the room [16:05:42] Alot of Oreos in the Line Islands in the Pacific but they never made it to Hawaii [16:06:55] vondawarehamhayes leaves the room [16:08:10] brittle star, not brisingid [16:08:20] Pentametrocrinus) [16:08:37] yeh, saw that too on the right Tina [16:08:46] kelseyviator leaves the room [16:09:19] poss trying to escape the lights [16:09:27] brittle star can live everywhere, on rocks, sediment, sponges, corals, you name it. [16:09:47] LAT : 35.179028 , LON : -48.116934 , DEPTH : 1283.8574 m, TEMP : 4.37159 C, SAL : 35.01067 PSU, DO : 8.29101 mg/l [16:10:25] bone? [16:10:45] its a toadfish, very good Roland [16:10:47] it looks like non-cooperative fish [16:11:04] coffinfish --benthic angler [16:11:07] but quite photogenic) [16:11:34] why coffin? [16:12:32] I don't know why coffin. [16:12:50] it is quite small for coffin? [16:12:51] jaymesawbrey leaves the room [16:13:15] nothing inside? [16:13:22] Genus of that fish is probably Chaunacops. It's a juvenile if I am not mistaken. Sorry if I blew the common name. [16:13:37] can we zoom? [16:14:00] UHHHHHHHHHH????????? [16:14:05] no fish{ [16:14:15] I think they also called sea toads. [16:14:30] well its a glass sponge, but that's as far as I can go [16:14:47] LAT : 35.17902 , LON : -48.116872 , DEPTH : 1281.1165 m, TEMP : 4.37666 C, SAL : 35.01304 PSU, DO : 8.27268 mg/l [16:15:34] Lophophytus attachment. Maybe rossellid? or a pheronematid with an osculum which would be a bit unusual [16:16:18] davidvousden leaves the room [16:17:20] Liponema? [16:17:23] I've got to send that photo to Konstantin Tabachnick at the Shirshov Institute in Moscow. He might know what that sponge is [16:17:45] Liponema anemone. Agree with Tina [16:17:50] he is in plane, going to Vladivostok to Emperors [16:18:33] Oh, that's right. Thanks Tina. He is finally getting to go on another cruise. Yeah, life is slowly getting back to normal [16:19:03] Tunicate? [16:19:07] exactly. What is that?! [16:19:20] it is weird [16:19:28] haroldcarlson leaves the room [16:19:29] I agree with Tina about tunicate [16:19:31] trash we think [16:19:48] LAT : 35.178974 , LON : -48.116876 , DEPTH : 1275.9064 m, TEMP : 4.37065 C, SAL : 35.01446 PSU, DO : 8.27413 mg/l [16:19:52] that's a weird demosponge [16:19:54] noellehelder leaves the room [16:20:39] it is weird [16:20:57] what its the red thing left - just after hyocrinid [16:21:27] Sorry, don't know demosponges very well. Need to send photo to Rob Van Soest in Netherlands [16:21:43] I think I have seen similar sponge off Newfoundland? may be Vonda knows [16:22:07] I think you are right Rhian [16:22:36] white cookie star on right [16:22:41] slimestar? [16:22:46] yes.. Hymenaster or Pteraster.. the osculum is what you're seeing I think [16:22:58] no anthomastus [16:23:55] I will send link to a friend after) [16:24:08] weird [16:24:11] she likes slime stars [16:24:40] have troubles with seatube today [16:24:48] LAT : 35.179006 , LON : -48.117105 , DEPTH : 1274.7947 m, TEMP : 4.36905 C, SAL : 35.0142 PSU, DO : 8.25148 mg/l [16:25:25] Hi Tina, thanks for the notification. Troubleshooting now [16:26:47] emilycrum leaves the room [16:27:22] oreo [16:28:39] seatube works now [16:29:08] noellehelder leaves the room [16:29:25] vondawarehamhayes leaves the room [16:29:29] Shrimp is Bathypalaemonella sp [16:29:49] LAT : 35.178959 , LON : -48.116969 , DEPTH : 1269.4552 m, TEMP : 4.37004 C, SAL : 35.01581 PSU, DO : 8.25975 mg/l [16:29:53] Chrysogorgia sp [16:30:15] SeaTube should be functioning aain [16:30:17] *again [16:31:08] Thanks! [16:31:39] how are currents? [16:31:56] Cyclothone [16:32:18] @tinamolodtsova were you trying to say Amembranaster earlier? [16:32:48] )))) I am doing it now)) [16:34:21] christopherkelley leaves the room [16:34:49] LAT : 35.178979 , LON : -48.116876 , DEPTH : 1271.2361 m, TEMP : 4.36205 C, SAL : 35.01592 PSU, DO : 8.25462 mg/l [16:36:10] Can we zoom on those little white dots to see if they are urchins? [16:36:15] how far from the surface we are? [16:36:24] christopherkelley leaves the room [16:36:53] we have about another 100m up this wall to go [16:37:39] not sure what type of sponge [16:38:04] thank you! [16:38:10] can we zoom star [16:38:34] cookie [16:38:37] looks like Plinthaster [16:38:54] probably feeding on those tiny sponges [16:39:06] vondawarehamhayes leaves the room [16:39:23] @Kira, and how far from the wall? [16:39:49] LAT : 35.178913 , LON : -48.116939 , DEPTH : 1267.2146 m, TEMP : 4.35764 C, SAL : 35.0144 PSU, DO : 8.25931 mg/l [16:41:16] @tina, about 5m or so [16:42:39] kelseyviator leaves the room [16:43:13] Sorry could figure out sponge [16:43:34] Fish is a gadiform, maybe Lepidion again like the other day [16:43:45] Yes ... a codling ... Lepidion [16:44:09] Could be a muppet character [16:44:39] halosaur [16:44:42] halosaur [16:44:50] LAT : 35.178889 , LON : -48.117024 , DEPTH : 1264.0031 m, TEMP : 4.35908 C, SAL : 35.01555 PSU, DO : 8.26933 mg/l [16:45:19] @Peter, did you see that weird eel like fish that had a defined caudal fin and very blunt head that they came across about an hour ago? [16:45:33] noellehelder leaves the room [16:46:27] they can be territorial [16:46:54] note the erect dorsal spine [16:47:27] much like triggerfish or butterfly fish on shallow coral reefs [16:47:41] Nice - i'll look out for that Peter! [16:49:50] LAT : 35.178816 , LON : -48.116974 , DEPTH : 1253.8137 m, TEMP : 4.33179 C, SAL : 35.01434 PSU, DO : 8.26655 mg/l [16:50:38] You won't get it from me Rhian. No idea [16:50:50] perhaps a plexaurid [16:50:55] vondawarehamhayes leaves the room [16:51:35] i think i saw banding, so probably isidid [16:51:47] Good collection candidate [16:53:43] I don't see any banding....but will take a good look at the collection! [16:54:44] oh..then probably a plexaurid [16:54:50] LAT : 35.178838 , LON : -48.116983 , DEPTH : 1255.3309 m, TEMP : 4.32777 C, SAL : 35.01215 PSU, DO : 8.28311 mg/l [16:55:35] I think it's a plexaurid [16:56:00] I think so too - but different from the one collected yesterday - larger polyps. [16:56:34] could we get a zoom before it goes in the box? [16:56:38] kelseyviator leaves the room [16:56:40] it does not retract [16:57:20] bramleymurton leaves the room [16:57:59] rhian, do you have yesterday specimen close-up? [16:58:14] Sorry Jaymes, I was logging the sample and didn't see that request [16:58:40] We took photos @Tina [16:58:50] Echinus-looking, but I am not urchin person [16:59:09] @rhian, can I have couple? [16:59:13] No worries, was just curious about the contracted polyps. [16:59:48] this looks like Echinus [16:59:51] LAT : 35.178793 , LON : -48.117023 , DEPTH : 1253.8531 m, TEMP : 4.30582 C, SAL : 35.00944 PSU, DO : 8.28181 mg/l [16:59:56] different color from the others we've seen though [17:00:10] @tina - i can't get them now, but send me an email and I can later [17:00:34] tina@ocean.ru [17:00:51] or I will send you email) [17:01:37] done [17:01:57] another mistique sponge [17:02:30] halosaur [17:02:40] Halosaur I guess [17:03:26] Did anyone come up with an explanation for why the carbonate substrate here is so smooth? [17:04:46] kelseyviator leaves the room: Replaced by new connection [17:04:50] yes very nice. Hymenaster [17:04:52] LAT : 35.178805 , LON : -48.11696 , DEPTH : 1248.6706 m, TEMP : 4.31646 C, SAL : 35.01074 PSU, DO : 8.26835 mg/l [17:05:51] @Bram, nope, just guesses at erosion [17:05:56] thank you! [17:06:25] another star [17:07:03] two [17:07:54] @Tina: [17:08:15] @Tina: just emailed you closeups of the coral collected yesterday [17:08:29] Thanks Chris! [17:08:34] A goniasterid, one of the larger Plinthaster I've seen! [17:08:38] poss. Peltaster [17:09:11] vondawarehamhayes leaves the room [17:09:32] @Bram - see the change in texture here. Would you guess diff ages? [17:09:37] @Chris, Rhian has on-deck photos of this specimen [17:09:51] LAT : 35.178751 , LON : -48.116979 , DEPTH : 1243.6357 m, TEMP : 4.30438 C, SAL : 35.01076 PSU, DO : 8.25431 mg/l [17:10:17] is it volcanic? [17:10:46] @Tina, it never really looks like it up close, but not sure [17:11:28] @Kira I've seen a similar seafloor substrate to this on the Rio Grande Rise where we went up an incised channel that we thought was caused by the downward movement of sediment probably from when that part of the RGR was subaerial. [17:12:10] noellehelder leaves the room [17:13:54] @Kira, the top of this seamount is a gyot and was once wave-cut. So we're looking at the effects of a sort of sediment 'waterfall' that has eroded and smoothed the substrate. [17:14:52] LAT : 35.178768 , LON : -48.116979 , DEPTH : 1242.5297 m, TEMP : 4.30328 C, SAL : 35.01066 PSU, DO : 8.29694 mg/l [17:14:55] @Bram - worth a rock collection? [17:15:16] might be some broken pieces here [17:15:29] any chance to collect? [17:15:41] worm or sponge? Or rock ;) [17:15:46] I don't think it is polymastia [17:15:50] @Kira, if you can find one that is in situ, that would be helpful - but how far below the top are we? [17:15:55] can we zoom at pink thing above? [17:16:11] Pilots re debating [17:16:21] wonder if this can be a calcarean [17:16:35] @1240 m and top is @1175 m [17:16:39] They're setting up to sample the sponge [17:17:24] Many thanks. Just have no idea what this could be. Right now looking at what references I have [17:17:42] nemertine worm [17:17:46] Its pretty abundant here as well, so a good representative sample [17:18:15] Thanks Robert [17:18:31] Demo or Hex @Chris [17:18:44] oh.... only 65 m from the top! if we can get a sample that would be really good. It is not impossible to then we are looking at wave eroded structures here and the hard rounded carbonate is the reef building phase of the gyot when it was an atol! [17:19:23] Its either a demosponge or a calcarean. Not a glass sponge (at least I don't think it is) [17:19:25] noellehelder leaves the room [17:19:48] @kira is you think of a sample, make sure its the hard basement carbonate and not a lump of the later dead coral debris [17:19:53] LAT : 35.178773 , LON : -48.117041 , DEPTH : 1242.3535 m, TEMP : 4.30836 C, SAL : 35.0107 PSU, DO : 8.27659 mg/l [17:19:55] probably brittle [17:20:23] jasonchaytor leaves the room [17:20:41] peterauster leaves the room [17:21:20] Soft! [17:21:34] which makes it even stranger in my mind [17:22:34] The problem with trying to key it out using Systema Profera is that there are a gazillion demosponges in that reference. Many characters are things you can't see in situ [17:23:13] Thanks very much for this collection. I think it will turn out to be very interesting. [17:24:53] LAT : 35.178744 , LON : -48.11706 , DEPTH : 1242.2261 m, TEMP : 4.30389 C, SAL : 35.01123 PSU, DO : 8.27127 mg/l [17:26:29] christophermah leaves the room [17:27:01] If we think of the history of this seamount, it started off as a volacnic ocean island, then subsided (as the underlying ocean crust aged and cooled) and as it did so, the waves would have eroded the sides and flanks. At some point in time, the rate of subsidence slowed and the waves had time to plane off the top generating an atol with a coral reef cap. this then subsided further, being eroded by wavesm untill it formed the gyot we see today. [17:29:01] vondawarehamhayes leaves the room [17:29:54] LAT : 35.178769 , LON : -48.116991 , DEPTH : 1242.6478 m, TEMP : 4.30102 C, SAL : 35.01124 PSU, DO : 8.26824 mg/l [17:30:13] @Rhain √ [17:30:34] I'm trying to research the calcarean Leucosolenia which has a similar morphology as that sponge. Many species have a terminal osculum on each branchlet but couldn't see if those were present on the one you collected [17:31:38] kelseyviator leaves the room [17:32:18] worth a punt [17:32:56] I keep picking too large rocks.... [17:33:17] :-) [17:34:38] @KiraI am pretty sure this as cast topography from when this was an atol [17:34:55]