[00:51:30] EX1803_DIVE11 ROV powered off [01:31:25] paullarson leaves the room [12:26:37] iscwatch2 leaves the room: Replaced by new connection [12:53:05] EX1803 DIVE12 Test message [13:17:56] EX1803_DIVE12 ROV Launch [13:23:48] EX1803_DIVE12 ROV on Surface [13:24:32] EX1803_DIVE12 ROV Descending [13:30:42] we will have our call momentarily. Waiting to get clearence from pilots. [13:43:20] adamskarke leaves the room [13:52:21] adamskarke leaves the room [14:04:10] adamskarke leaves the room [14:13:38] EX1803_DIVE12 ROV on Bottom [14:17:17] scottfrance leaves the room [14:18:38] heatherjudkins leaves the room [14:24:29] amybowman leaves the room [14:28:01] I'd be interested in zooming on any bryozoans we see today [14:29:54] Capnella? [14:31:02] Same little urchin as yesterday too. [14:31:15] Membranipora? [14:31:27] great, thank you! I don't think it's Membranipora. [14:31:59] thanks megan [14:32:08] It is a cheilostome, but I'll have to try and ID it [14:33:17] call this sample carbonate rock? [14:33:26] Epigonus [14:33:40] @lauren - yes [14:42:31] Goniasteridae [14:44:30] For that seastar, my guess for the genus is either Plinthaster or Sphaeriodiscus [14:45:34] stevenauscavitch leaves the room [14:47:33] Pontius [14:50:09] Cookeolus [14:56:24] Brown tree-like agglutinating foraminiferan waving in front of Farrea sponge. [15:07:49] I think the species is Schizoretepora. Perhaps S. elongata, which has been recorded in the GOM at about this depth [15:09:30] @megan - I've seen something very similar on the Miami Terrace. Has Schizoretepora been reported from SE Florida? No samples, unfortunately. [15:09:48] The yellow coloration of that Farrea and this little sponge likely comes from a small molecule called uranidine that is commonly seen in quite a few sponges (deep-sea/shallow and hexactinellid/demosponge). When exposed to air or EtOH it rapidly oxidizes and turns into a black precipitate. The ecological purpose for this compound is still unknown. [15:11:37] @nolan - Might that be the same thing that colors vase-shaped hexactinellids in as little as 130 m in the Caribbean? Saw large populations on the deep-reef wall at Isla Roatan, Honduras. [15:11:57] @Chuck Was it deep water? If so, it probably was the same species [15:12:20] @megan - About 300-400 m. [15:12:21] adamskarke leaves the room [15:13:16] @chuck then I would say yes. I'm using a Florida ID guide [15:14:22] Looks like a member of Atelecrinidae - no pinnules on the arm bases and very long slender cirri. Either Atelecrinus or Paratelecrinus. [15:16:49] adamskarke leaves the room [15:20:44] @megan - thanks very much. [15:21:00] @Chuck and @Megan Maybe. I know it was originally isolated from Verongia (now Aplysina) aerophoba and is common throughout the Verongidae (now Aplysinidae). We also saw uranidine behaving yellow compounds in the deep sea Poliopogon of the Pheronematidae and Bolosoma and Bolosominae of the Euplectellidae from the Pacific. [15:23:09] kensulak leaves the room [15:26:19] @adam call this one Primnoidae ? [15:27:14] yes, Primnoidae [15:27:39] thanks [15:27:48] Also an atelecrinid - I could just see a short length of arm base without pinnules. The filamentous arm tip is I think unique to this featherstar family (also in some stalked crinoids). Unfortunately, I've never seen specimens of this family fresh enough to see any color. In any case, this is a shallow record for the family in the Gulf of Mexico. A. balanoides previous shallow GoM record is 512 m. Paratelecrinus orthotriremis is known from shallower water in the Yucatan Channel & Caribbean Sea, but is not recorded from the Gulf. [15:31:13] hi everybody [15:32:13] Polymixia [15:32:54] Speaking of the swimming polyaetes earlier, based off of the recent study in Nature about the impact on large scale water mixing by brine shrimp swimming en mass , I suppose one could extrapolate this towards the swimming polychaetes playing a role in the deep water mixing to move nutrients as well as dissolved gases. So keep it up little swimmers! [15:33:04] @Tina Hello! [15:35:33] nolanbarrett leaves the room [15:36:12] charlesmessing leaves the room [15:42:20] Chaunax pictus [15:44:41] Note on fish IDs: The large blue-gray hake with nifty black fin margins = Laemonema goodebeanorum, the 'coral hake'. Not always found exactly on Lophelia habitat, but almost always found very near to Lophelia - and rare elsewhere. Large red photogenic fish is not a Bigeye (although similar in color), but is a beryciform, probably Beryx splendens, the Spendid Alfonsino. This species is often found near Lophelia, though more generally and widely distributed. [15:47:08] kensulak leaves the room [15:49:06] thanks ken [15:59:22] Can we please get more close-ups of large primnoid colonies to check the invertebrate assemblages? [16:02:23] any fish today? surprised we are not seeing more... [16:03:21] 100 m transit [16:03:43] mostly muriceides ?hirta and plumarella here? [16:03:54] @Andrea There were a handful earlier [16:04:04] Candidella imbricata? [16:04:37] there are some kind of expansion along branchlets. it has to be wormruns of Gorgonipolyenoa [16:04:46] oh primnoid? from widde-zoom it looked muriceides [16:04:53] have you collected this? [16:06:58] we have collected the primnoid today [16:14:58] looks like feeding at cupcoral [16:15:36] adamskarke leaves the room [16:16:55] Looks like the same bryo we've been seeing [16:18:54] Cheliodonisis aurantiaca [16:21:56] Caught a glimpse of the crinoid. Any chance of another zoom? [16:22:49] Could we take a look at the plate like sponges? [16:23:08] Please and thank you [16:23:20] I think the frilly sponge might be Leiodermatium. [16:24:03] I was thinking the same thing [16:24:40] Possibly Comatonia cristata. [16:24:44] is it Lithestid? [16:24:56] Yes [16:26:22] fish [16:26:35] To me Leiodermatium is quite interesting since a wonder sponge because some specimens were found to produce a fantastic compound called leiodermatolide that has powerful anti-pancreatic cancer activity. [16:27:09] adamskarke leaves the room [16:27:50] Thank you for the zoom. I am no expert, but if it was indeed a Leiodermatium, it was really cool to see it in its natural habitat [16:31:24] I do not see many fish here, not like yesterday [16:35:38] Lasers on the paramuricea please? [16:37:09] sorry we are on the move [16:39:39] amybowman leaves the room [16:39:59] adamskarke leaves the room [16:42:24] I'm going to have to review the video closely afterwards. Virtually all featherstars have 10 or more arms unless some are regenerating (a couple of non-local genera have 5 unbranched arms). I have never encountered 8-armed specimens in the western Atlantic, and multiple specimens is completely new. Perhaps a collection if you see another. It may be a swimmer. Perhaps grabbing a bit of its perch will reduce the likelihood of its swimming away. [16:42:30] Beryx decadactylus [16:43:08] its a beryx but i have to look back to see whether it is decadactylus or splendens [16:43:27] thanks andrea [16:45:52] nolanbarrett leaves the room [16:46:05] copy that chuck. hopefully we will see one on a rock, orsomething else that is sample-able [16:47:14] yes that was B. decadactylus [16:47:51] copy that andrea [16:51:11] adamskarke leaves the room [16:51:37] I think maybe Plinthaster [16:54:20] Gotta leave for a while. [16:54:23] charlesmessing leaves the room [16:54:54] thanks chuck. we will keep looking for a 8-armed CRI that could be sampled [16:55:16] Pontius [16:59:23] These zooanthids seem to really like Aphrocallistes beatrix [17:00:04] they are not connected [17:00:19] Oh okay. [17:00:40] Have we seen them on other sponges? I have not focused on that. [17:00:44] no... nolan, I mean zoanthids [17:03:41] Okay, thank you for the clarification! [17:07:15] Hello all [17:08:16] Hi Asako! [17:09:07] Рш Фыфлщ [17:09:14] Hi Asako! [17:09:56] Hi Nolan! Hi Tina! [17:14:08] ROV moved another 100m [17:14:13] Astarte? [17:16:36] robertcarney leaves the room [17:20:47] I believe that those tall white knobby sponges are Petrosiidae. (John Reed identified similar ones off the Florida east coast.) [17:21:57] The yellow encrusting sponges might be Spongosorites. [17:22:01] The pilots are coming through on the science line [17:22:20] I think the white shelf-like sponges might not be hexactinellids, but demosponges. They seem to resemble the Poecillastra genus of Vulcanellidae demosponges. I don't know if someone already said this, but i just wanted to mention it. [17:24:38] Amazing coverage of lots of different small encrusting sponges (are these as large as they get or all juveniles, I wonder), agglutinating forams, adn serpulid polychaetes. [17:27:44] adamskarke leaves the room [17:36:58] Anthomastus for me [17:43:56] The overhanging shelf with primnoids on top is strongly reminiscent of the Outer Platform Ridge of the Miami Terrace, except the species are different and the rock substrate is supposedly blackened by a phosphoritic crust rather than ferromanganese. [17:48:32] Looks like Homola sp. carrying a bit of Farrea. [17:51:27] charlesmessing leaves the room [17:55:50] can we zoom at these sponges? [17:56:40] and black corals [17:58:22] Aphanipathidae [17:59:24] I doubt we can collect them [18:00:34] probably there is a bunch of them upper [18:00:51] under the shrimp [18:01:18] Call this coral Aphanipathidae ? [18:01:28] The sponges remind me of branching Rossellidae. But the main body of the sponge and the osculum look like Bolosominae of the Euplectellidae, according to the animal guide. [18:01:41] actually I do not know what is this. it may be close to species described by Dennia as Allopathes denhartogi [18:01:50] Dennis [18:01:57] Not Allopathes [18:02:48] @daniel, not REAL Allopathes, but close to A.denhartogi [18:02:54] @Dan what would you like me to call it for the collection? [18:03:50] they are outside of cave as well [18:03:53] stand by, lauren (will get a better look shortly [18:04:21] try left [18:05:49] has to be cut [18:08:29] Lauren: Just leve it as [18:08:46] Antipatharia for now (could be 2 different families) [18:11:09] I haven't had a real good look at these little yellow black corals, but they are reminiscent of a collection from EX1711: DIVE01_SPEC03BIO [18:11:32] yes.... it may be Pteropathes as well, chuck collected some species that we identified as Pteropathes... if Chuck remember the color? Generally yellow is Aphanipathidae [18:11:42] Scott, the EX1711 collection was an Allopathes [18:12:02] theses are not (based on overall branching pattern) [18:12:28] My comment is based only on the superficial distant view of thin yellow antipath branches, nothing more informed than that. [18:12:58] Scott, do you have a shot of that specimen from 1711? [18:13:37] i can send it to you tina [18:13:52] great [18:13:55] Just emailed one to you, Tina [18:14:36] we have even branching.. thanks to pilots [18:14:54] I am having streaming problems today, which I attribute to my home internet, not to the OkEx stream. [18:15:46] laurenjackson leaves the room [18:16:12] thanks, got it [18:20:06] it is good to look under table from time to time [18:20:12] scottfrance leaves the room [18:20:57] starfish [18:21:17] never remember name of it [18:21:52] Tremaster [18:22:16] thanks nolan [18:22:52] You're welcome:) [18:26:43] Nezumia [18:28:32] Trachyscorpia cristulata [18:31:53] Apologies if its already been mentioned but have we established what these abundant white primnoids are? [18:32:28] yes, we collected one steve [18:35:47] Hi everyone, I'm joining for the first time. I'm a sponge taxonomist and have been following your dives of the past days [18:36:26] Hi joana, great to have you here [18:37:01] welcome Joana [18:37:08] thanks :-) [18:37:45] the lollipop sponge we saw just a while ago is most likely Sympagella nux (Family Rossellidae), first described by Oscar Schmidt in 1870 from specimens collected off Florida at 224 m depth. [18:38:17] there are only a dozen species described in the genus [18:38:48] stevenauscavitch leaves the room [18:39:17] This area looks so much like the Miami Terrace. Have you collected any rock samples from this general area and depth? [18:39:21] there is a juv colony under big one [18:39:44] joanaxavier leaves the room [18:41:44] @Joana Thank you for the ID. I was really curious about what it could have been. The branching reminded me of some of the Rossellidae from the Pacific, but I was unsure of the main body of the sponge. [18:41:49] @ Charles. We collected a rock this morning, from 40 m downslope, that matched the lithology we are seeing here. [18:43:02] We have not seen many lose rocks on this ridge that were suitable for sampling but will keep a look out. [18:43:42] @adam. Thanks. Be interesting to compare it to samples from the other coast (although not my field). [18:43:55] @nolanbarret yes, there are 3 species in the same genus reported for the Pacific (4 in the N Atlantic/Mediterranea) [18:44:25] laurenjackson leaves the room [18:44:45] @Charles - agreed. [18:45:11] Someone mentioned yesterday that Gracilechinus was back in Echinus, but WoRMS still has the local species in Gracilechinus. Those damn taxonomists! [18:46:01] charlesmessing leaves the room [18:47:02] @Joana Quite interesting. I will have to let Chris Kelley at HURL to add those options to our current Okeanos animal guide. We have images of those branching Rossellids, but only listed as "Rossellidae?" [18:49:06] Couldn't really get surface detail on the sea star, but based on the general shape, length of rays, and lack of obvious spines, maybe Echinasteridae [18:49:38] thanks nolan [18:52:59] @danielwagner Hi Daniel, there being the opportunity it would be great to collect a specimen of that most common flabellate sponge. It's rather structuring (alongside with the corals) of this habitat, but I'm not sure what it is [18:55:11] Hi daniel! [18:55:29] @Danial If all of those associates arrive safely at the surface, that should be lots of fun teasing them all off! [18:55:44] joanaxavier leaves the room [18:56:04] copy that nolan. All associates are carefully inventoried here [18:57:43] joanaxavier leaves the room [18:59:40] Pontius [19:01:56] adamskarke leaves the room [19:03:29] joanaxavier leaves the room [19:03:32] There look to be some stylasterids here too? Or are those scleractinians? Stonier-looking fan-shaped structures [19:04:18] completed 2x100 m move [19:04:40] 6 arms [19:04:54] @Joana What is your opinion on the large white shelf sponges? I was tentatively thinking Poecillastra. [19:05:32] @nolanbarrett yes, I think it could be so [19:06:11] yes, it looks like a stylasterid [19:06:31] P. compressa is very common on similar habitats in the NE Atlantic [19:06:46] possibly Stylaster sp. but its so tough to tell beyond that [19:07:41] Interesting, thank you! Im still new to the sponge world. The images in the Okeanos animal guide of Poecillastra are from the Mariana islands. [19:09:07] As for the sea star with 6 arms, maybe Nephanthia from the family Asterinidae [19:10:32] It's Aphrocallistes [19:10:35] It looks like Aphrocallistes with the top broken off [19:10:55] Top definitely broken [19:13:18] Possibly another Tremaster seastar [19:14:24] These look to me like Narella [19:14:47] what is that egg-like thing at the left of the colony? [19:15:15] robertcarney leaves the room [19:15:26] joanaxavier leaves the room [19:16:01] sponges [19:16:16] Would it be possible to get a second sample of one of the smaller primnoid colonies? [19:16:26] yes.. looks like sponge [19:16:32] To confirm that this is all the same species [19:16:50] yes, possibly a Phakellia [19:17:37] thanks joana [19:18:38] joanaxavier leaves the room [19:19:24] joanaxavier leaves the room [19:21:00] joanaxavier leaves the room [19:22:17] Plexaurid [19:24:18] will leave for 10-15 minutes [19:25:56] adamskarke leaves the room [19:30:33] joanaxavier leaves the room [19:33:24] adamskarke leaves the room [19:33:31] the sponge is Aphrocallistes beatrix [19:33:58] anyone knows the name of the zoanthids? [19:34:54] yes, glass sponge [19:35:05] If it helps with the ID, Tina says the zoanthids are not connected to each other. But I do not know the ID of them. [19:35:08] thanks! [19:35:33] are they zoanthids or small anemones? [19:35:37] and it's very interesting because this association between this sponge and those zoanthids occurs across a very large geographical range [19:36:19] a few years ago Jim Thomas and I described a new genus of amphipod that lives in this sponge. It seems to enter when you but then can't get out. [19:36:42] some Plumarella here too [19:36:57] @Les I'm not entirely sure. I have a bunch of screenshots. What would I look for to differentiate between the two? [19:37:07] @les that's very interesting [19:38:12] @Joana We have seen a lot of A. beatrix throughout this exedition, maybe less then half of the time does it have the zoanthid/anemones [19:38:46] andreaquattrini leaves the room [19:38:50] @Nolan, since they are not attached to each other then the only other thing is mesentery arrangement and maybe pedal disk. Tina will know better. [19:38:59] it would be really important to get a sample of these large sponges [19:39:19] @nolan yes, I've noticed that too [19:39:53] maybe not all specimens we've seen are the same species [19:40:58] @Les Okay, Tina didn't exactly correct us as we have been calling them zoanthids. But she did mention that they were not connected. [19:41:19] @Joana That would be very interesting to look in to. [19:43:13] @Nolan, maybe it has to do with the flatness of the oral disk and the skinny tentacles... maybe @Tina can help when she comes back on [19:43:35] or a single ring of tentacles.... [19:45:38] joanaxavier leaves the room [19:45:41] Another Plinthaster or Sphaeriodiscus seastar [19:46:33] To bottom right of the sponge [19:46:55] The sponge to the lower left of sponge is too far to tell for sure [19:47:06] I mean the seastar to the lower left [19:49:34] Thank you! [19:49:39] Henricia& [19:50:13] @Tina I think Henricia too, but I cant see surface details well [19:52:12] just sport [19:52:43] meganmcculler leaves the room [19:52:58] stevenauscavitch leaves the room [19:53:39] @Tina Now that you are back, on the Aphrocallistes beatrix, are they yellow anemones or yellow zoanthids. You said they were not connected. [19:55:45] @nolan, I do not know in fact. most of zoanthids are not solitary and here we cave separate animals [19:57:04] they may be sea anemones as well [19:57:38] Aquaumridae [19:58:00] @nolan, we won a prize for Henricia... [19:58:48] joanaxavier leaves the room [19:58:49] @Tina Thank you and yay! [19:59:41] Tell Chris M that we saw at least 2 tremaster today [20:00:03] And tell him thank you! [20:02:23] adamskarke leaves the room [20:06:29] adamskarke leaves the room [20:07:28] Seastar feeding [20:09:02] Another, seastar. Maybe Tamaria [20:09:14] quite a few skeletons of dead Aphrocallistes beatrix too [20:10:08] @Joana I noticed that too. [20:12:35] the stalked sponges are Sympagella nux [20:12:52] nux [20:13:23] @Joana Do they usually grow upside down like these? [20:14:21] @nolan they can also grow upright, but it's not uncommon to find them on overhangs [20:17:58] joanaxavier leaves the room [20:17:59] @Joana Okay, thank you. [20:21:35] leswatling leaves the room [20:22:24] Anthias [20:23:20] andreaquattrini leaves the room [20:23:45] joanaxavier leaves the room [20:32:55] leswatling leaves the room [20:34:31] adamskarke leaves the room [20:36:25] joanaxavier leaves the room [20:37:17] I think demosponge. Too many openings for a tunicate. [20:37:38] hm. I am opposite [20:37:52] yes, demosponge, but I don't know the species [20:38:11] I trust joana [20:38:25] I trust Joana too [20:38:58] oh yes! if you can collect that would be great [20:39:09] I've seen the green latrunculia that Peter was talking about. Its similar, but diffferent from this [20:39:39] I would try to checl stone [20:40:07] I agree, it could be Latrunculia [20:45:51] Oh darn, well at least we got fantastic imagery [20:46:00] thanks anyway [20:51:14] how is current now? [20:51:22] Dive panning call at 4:05 PM CDT [20:51:29] planning [20:52:24] joanaxavier leaves the room [20:54:56] @Joana Chuck Messing and I were thinking that these yellow/tan wavy sponges that we have seen a lot of could be Leiodermatium. What do you think? [20:56:36] yes, I was wondering about those. They look like what we call "lithistid" sponges (a.k.a. as rock sponges) [20:56:53] Leiodermatium is for sure a possibility [20:57:18] but again, we'd need a sample to ascertain that [20:57:48] there are many undescribed "lithistid" species in the NWA [20:58:31] Gotcha, thank you. [20:59:06] Eknomisis? [20:59:36] it is not plexaurid? [20:59:59] could be... [21:00:05] @Tina is closer I think. [21:00:16] copy that [21:00:24] thanks les and tina [21:00:38] polyps contract into a basal part [21:01:43] Although I admit I was thinking Eknomisis at first, or maybe bamboo D clade, but then the details of the polyp structure became clear. [21:02:33] real calyx is visible... [21:02:45] may be collection? [21:03:13] agree with collection if it is not collected before.. [21:03:20] sorry tina, we are almost out of bottom time [21:03:26] Tremaster=ravioli seastar [21:04:03] I think that last coral is also behind this sea star [21:04:18] @daniel, it is OK.. anyway, it did not look like bamboo for me [21:04:50] stevenauscavitch leaves the room [21:05:56] @nolan - it really called ravioli? [21:07:18] @Tina Chris Mah said that the ROV pilots called it the ravioli seastar [21:08:01] Since it is close to dinner here, I think I make ravioli for dinner. I have some in my freezer. [21:08:18] what a clean crab, must be relatively recently molted [21:10:00] nice sponge - very likely in the family Corallistidae [21:10:13] one of those rock sponges (lithistids) [21:10:33] Very interesting! [21:10:51] Hermit crab and sponge [21:11:07] Thanks for a great dive today, everyone! [21:11:25] wow!!! [21:11:35] that's a big sponge! [21:12:20] zachproux leaves the room [21:12:31] So cool to end on! [21:12:50] thanks to pilots, daniel, thanks for all) [21:13:00] Thank you for such a wonderful dive everyone! See everyone tomorrow! [21:13:06] nolanbarrett leaves the room [21:13:22] thank you okeanos team!!! [21:13:33] I'm still having some streaming issues. Can you type time of post-dive call here? [21:13:59] nice chatting to you all here, I'll try to join as much as I can [21:14:22] Thank you very much for the great dive today. [21:14:30] (given the time zone...) [21:14:40] @scott - now [21:14:46] tinamolodtsova leaves the room [21:15:01] asakomatsumoto leaves the room [21:15:48] EX1803_DIVE12 ROV Ascending [21:16:35] Thanks Tina [21:18:22] joanaxavier leaves the room [21:19:54] leswatling leaves the room [21:20:19] markbenfield leaves the room [21:22:52] scottfrance leaves the room [21:24:12] adamskarke leaves the room [21:43:09] EX1803_DIVE12 ROV on Surface [21:57:37] EX1803_DIVE12 ROV Recovery Complete