[13:32:06] test post [13:32:44] EX1803_DIVE06 ROV powered off [13:49:02] Time update for Dive 6: Pre-dive call still at 9.30 CT as originally planned, but expecting on-bottom by ~~10 CT [13:49:10] danielwagner leaves the room [13:59:20] EX1803_DIVE06 ROV Launch [14:05:10] adamskarke leaves the room [14:05:52] EX1803_DIVE06 ROV on Surface [14:06:21] EX1803_DIVE06 ROV Descending [14:12:09] katiewagner leaves the room [14:16:51] adamskarke leaves the room [14:31:00] adamskarke leaves the room [14:38:37] iscwatch2 leaves the room [14:49:18] rachelbassett leaves the room [14:50:03] jonathanjackson leaves the room [14:53:33] EX1803_DIVE06 ROV on Bottom [14:58:02] rachelbassett leaves the room [15:05:26] Fishing line [15:06:01] enriquesalgado leaves the room [15:07:03] adamskarke leaves the room [15:09:50] adamskarke leaves the room [15:10:07] danielwagner leaves the room [15:17:11] enriquesalgado leaves the room [15:17:27] Some kind of epibiont on the rock. Couldn't tell if it was a sponge or a brachiopod. [15:18:38] Bob Carney notes it was a brachiopod. [15:18:59] kelleyelliott leaves the room [15:19:58] Water walking isopod [15:20:04] danielwagner leaves the room [15:20:57] munnopsid [15:21:21] adamskarke leaves the room [15:24:33] adamskarke leaves the room [15:25:03] divaamon leaves the room [15:25:34] Shrimp [15:25:42] Possible corals on right [15:26:04] Hi everyone! [15:26:10] Chaceon eating something [15:26:15] Galatheid lobster behind Sea lily [15:26:18] Hi Diva! [15:28:09] Shrimp looks like from the family Aristeidae [15:28:24] SEEPSSSSS! [15:28:35] Finally you got to the good stuff [15:29:08] Squat lobster hanging on the back [15:29:24] Cool, do they often associate? [15:29:33] @Diva: I thought you meant the corals. ;-) [15:30:10] @scott: HA! Sure..... [15:30:51] like gorgonians and ophios? [15:30:55] Yay corals!! [15:30:56] Excited indeed [15:31:03] @Paul: they do. It might be premature to say this case is a specific mutualism, but squat lobsters are known to be associates of black corals (and octocorals... and sponges!) [15:31:18] I'm still trying to determine if that crab was using camouflage under that Chrysogorgiid/Hydroid? [15:31:33] That was wierd! [15:31:42] @Scott, very interesting thanks! [15:31:59] Another coral patch could be seen behind last one [15:34:03] @Steve: I wondered that at first, but on closer look it appeared to be sitting between 2 colonies (still could be "hiding" there) [15:35:05] @Scott right! the holdfasts were clearly visible on those colonies. What a prime location for an ambush of an unwary shrimp or crab [15:35:06] danielwagner leaves the room [15:37:21] kristopherbenson leaves the room [15:40:07] danielwagner leaves the room [15:41:40] @Steve: right! A pleasant stroll therough the [Chrysogorgia] bushes and BAM out junps the monster. [15:41:48] monomitopus sp. [15:42:14] Please remind people to mute their phones [15:42:20] Someone's hold music is playing on the phone line... [15:42:29] It is pretty loud! [15:42:37] colleenpeters leaves the room [15:43:16] Swiftia [15:44:46] Mussel shell served as attachement? or is it an older stalk? [15:46:31] Any port in a storm! [15:47:12] i guess mussel is attachment point. we see this a lot in the GOMx [15:47:26] particularly with Callogorgia [15:47:49] Someone has an open mic; we can hear background chatter. [15:48:58] @Andrea: interesting. Doesn't seem like a long term stable solution, but you take what you can get when you are a alrva, I guess. [15:49:03] *larva [15:49:32] jillbourque leaves the room [15:50:48] divaamon leaves the room [15:50:57] kevinrademacher leaves the room [15:51:38] a few sites that we have visited, Callogorgia was the only octocoral seen; attached to dead mussel/clam shells [15:53:15] The gas feeding this feature and the one to the southeast already visited is coming up the flank of a diapiric salt dome. It has a very classic base of gas hydrate stability that rises almost to the seafloor because of the warm brine accompanying the gas. [15:53:18] @Andrea: do you think recruitment is restricted to post-seepage areas? That is, do you see the Callogorgia growing in areas of active seepage? [15:55:30] yes we see CAllo growing in active seepage-they may have adaptations for dealing with the chemistry. i think erik and amanda have done further work on this since my dissertation [15:55:58] Scott is difficult to hear on feed [15:56:29] @Enrique: thanks. I will try to aim my mouth better at the speaker! Let me know if it gets better. [15:56:33] chuck fisher, amanda et al, also had some evidence for incorporating chemo derived material (perhaps feeding on resuspended sediments at chemo sites) [15:56:42] danielwagner leaves the room [15:57:31] coryphaenoides mexicanus [15:57:33] Ha, thanks Scott. Very interested in your commentary here [15:58:47] @Scott I should say Callogorgia is not feeding on resupsended sediments, but perhaps on material that is being resuspended [15:58:59] adamskarke leaves the room [16:00:00] @Andrea: Yup, got it. [16:00:21] thomasritter leaves the room [16:00:29] @Enrique: it would help if I spoke into the mic and not the speaker! ;-) [16:02:28] hello all [16:02:55] adamskarke leaves the room [16:03:02] another Monomitopus sp. [16:03:20] Good late evening Asako! [16:04:32] Hi Scott! I learned new English! [16:06:09] Tuce dwelling polychastes or sea pens below? [16:07:35] danielwagner leaves the room [16:08:16] looks like a sheath around the skeleton [16:09:03] i don't think this is a black coral [16:09:48] If no one knows what these are and we've seen 3 so far shouldn't we get one? [16:10:05] This is Siboglinum I'm pretty sure [16:10:11] We collected one on 1711 [16:10:22] Apologies - couldnt get back into the chat [16:10:40] you can see the red haemoglobin inside [16:10:43] diva said they collected one [16:11:04] If not siboglinum, then definitely a siboglinid [16:11:28] Yeah, it was like 2 feet long below the sediment. [16:11:48] crazy [16:11:58] Thanks Diva. [16:12:58] Sorry! I couldnt remember my password to log back in so was shouting at the computer in vain! [16:13:47] agree siboglinid intransparent tube [16:13:48] I thought I heard someone shouting... [16:13:59] Why does this one look branched in two? [16:14:05] okay I have no idea what the white thing is [16:14:22] can we zoom? [16:14:31] Too late - fishy [16:14:35] lukemccartin leaves the room [16:15:03] Now I'm doubt myself but we definitely collected one and it was a tube which we tried to blow the animal out of! [16:15:29] Dicrolene [16:16:29] corals [16:17:11] Carbonate rock [16:24:15] Acanthogorgia? [16:25:31] @Enrique: good call [16:25:41] what is the white attachment with yellow interior? [16:26:02] I think it is degraded Sargassum [16:26:17] Ah. Thanks Scott. [16:26:32] Confused me for a while! [16:27:16] same here. [16:27:36] divaamon leaves the room [16:27:38] downward facing corals look distinctive [16:27:57] polyps i mean [16:30:00] tiny GAS? or PAG? [16:32:11] Unidentified coral behind this rock [16:38:34] adamskarke leaves the room [16:43:18] colleenpeters leaves the room [16:45:03] alepocephalid (slickhead) fish [16:46:06] carolynruppel leaves the room [16:46:18] @Mike: do you mean that floaty? [16:46:26] that just went by? [16:49:10] adamskarke leaves the room [16:50:06] thomasritter leaves the room [16:52:11] danielwagner leaves the room [16:55:34] ooh sladenia shafersi [16:55:43] a type of goosefish [16:56:14] Dang it! I think I left "goose" off my list of adjective-fish... [16:56:31] Bahaha! You got all the others though. [16:56:51] the coloration of this Sladenia looks a little different from others though…the reticulated pattern is not as pronounced [17:03:21] delaniekirwan leaves the room [17:05:10] can we get a another zoom of goosey [17:06:31] 100 meters yet? [17:08:41] roger [17:08:44] markbenfield leaves the room: Replaced by new connection [17:13:48] adamskarke leaves the room [17:13:53] michaelvecchione leaves the room [17:14:13] Neolithodes agassizii [17:20:08] Camera adjustment worked nicely! [17:20:34] another Sladenia shaefersi [17:21:13] Just back on after lunch. [17:21:27] Agree S. shaefersi! [17:21:47] Farrea [17:22:00] or Lace sponge [17:23:22] adamskarke leaves the room [17:24:15] woohoo midwater! [17:26:04] stevenauscavitch leaves the room [17:27:47] kelleyelliott leaves the room [17:29:28] What frequency does your sector scan sonar operate on? If it's near 600-700 kHz you should be able to see returns from bubbles. [17:30:12] shirleypomponi leaves the room [17:31:13] Mark, the sonar on the ROV is 385 kHz and the one on Serios is 725 kHz. We have seem bubble streams with them before [17:31:51] Thanks. That makes sense, particularly the one on Serios. [17:31:56] *seen [17:32:09] Can we sample swiftia? [17:33:04] on move< bt we will keep looking ren [17:33:14] clipping [17:36:11] Was told we dob;t have Swiftia samples at this depth [17:37:20] Some serious pedicellariae [17:39:13] I am okay with collection of the sea star based on Chris' comments. [17:40:11] Now i am even more convinced we should collect it! [17:40:17] okay with collection [17:40:31] agree [17:40:35] what is the name of this species? [17:41:19] @Lauren: seems to be unknown, or at least uncertain. Hence the collection! [17:41:37] Family: Myxasteridae [17:42:00] But he did say Myxaster like [17:42:57] Just joining today's dive. Looked back at fishes: Aldrovandia affinis (long snout, rounded, dirty white dorsally); Monomitopus agassizi (looks to have been injured by bites of large crab); Dicrolene kanazawai (black vs gray D. intronigra); Nezumia sp (black, drifting head down) [17:43:03] Apparently one has been collected from virtually same depth off Newfoundland! https://www.flickr.com/photos/kspgale/8576575161 [17:43:30] kensulak leaves the room [17:44:02] Ken, do you think the Lophiid was Sladenia shaefersi? [17:45:27] Seastar...this may be one that undergoes autolysis...falls apart when dead. Ask Chris for preservation advice [17:46:22] will do robert [17:47:33] @Lauren this is bio spec #1 [17:52:41] adamskarke leaves the room [17:53:29] okexnav leaves the room [17:54:02] Enypniastes? [17:54:28] yes [17:55:14] genus cosmopolitan species diversity situation unresolved [17:55:23] rachelbassett leaves the room [17:55:37] Need scale pattern to ID Synaphobranchus [17:55:49] emmahickerson leaves the room [17:56:14] Have seen S. oregoni at 1200 m off MS Canyon in 2017 [17:56:37] Yes, Enypniastes eximia I think. [17:58:50] fluid? darkest places [17:59:04] posible small oil droplets [17:59:58] danielwagner leaves the room [18:02:30] hi dan! [18:03:19] Hi Erik! [18:03:41] hey Bill. another good one it looks like [18:04:37] enriquesalgado leaves the room [18:05:09] Clavularia rudis [18:05:25] Trachythela rudis [18:05:33] (genus name change) [18:06:32] Geophysics shows patchy distribution of high amplitude/hardgrounds, similar to AT 340 [18:07:14] So beautiful, just waiting for our lights to show up [18:07:32] adamskarke leaves the room [18:07:47] I think T. rudis was the original described name and currently accepted name [18:08:15] carolynruppel leaves the room [18:08:25] Yes - Trachythela came first, then it was Clavularia, then back to Trachythela. The joys of taxonomy! [18:08:35] adamskarke leaves the room [18:08:47] paullarson leaves the room [18:09:39] Cerataspis [18:10:44] Hello All! Joining from the Holling's Marine Lab ECC in Charleston, SC. Working on simplified CMECS substrate observations, taking over for Rachel Bassett from 1400-1700 EDT [18:11:28] for some reason cannot get to videofeed [18:11:47] welcome roberto! [18:12:10] will try to reboot [18:12:36] markbenfield leaves the room [18:12:56] tinamolodtsova leaves the room [18:14:13] robertmcguinn leaves the room [18:15:09] Was that an egg case of a skate? [18:15:33] danielwagner leaves the room [18:15:48] didn't see it [18:16:49] It was directly on a rock rather than on a coral. [18:18:18] the depressions are "pockmarks" that are expulsion features that are probably one time events that are destructive (with no sediment accompanying the gas) as opposed to mud volcanoes that are episodic, but persistent events that have sediment with the gas and are constructive [18:18:56] candidate for collection [18:19:09] Narella [18:19:18] Do you mean the primnoid, Andrea? [18:19:27] yes [18:19:52] You are more familiar than me with what is common or unusual here, so I defer to you. [18:20:31] nickpawlenko leaves the room [18:20:58] Any objections? [18:21:06] unusual to me. [18:21:18] Not from me, if Andrea thinks it is a good collection. [18:22:10] I second collection [18:23:53] adamskarke leaves the room [18:24:23] prior work-collected NArella pauciflora from GC852-1400 m. Could be the same thing, but different depth and seemingly rare, good collection [18:24:29] amybowman leaves the room [18:24:49] thanks Andrea [18:25:38] From Cairns & Bayer: N. pauciflora depth range 738-1473 m. [18:26:21] With the exception of CAllogorgia, primnoids seem to be fairly rare in the northern GOM [18:26:41] Competitive exclusion, eh... [18:27:31] kensulak leaves the room [18:28:06] madalynnewman leaves the room [18:30:39] perhaps limiting similarity [18:32:59] Gadomus longfilis [18:33:12] ? [18:33:33] looks like it [18:34:03] stevenauscavitch leaves the room [18:34:38] "Threadfin Grenadier" for the non-expert... [18:35:05] adamskarke leaves the room [18:35:07] Worm tube [18:35:31] zoom on anterior end? [18:35:39] Nice Gadomus with its 'radar' fully deployed including a forward directed barbel!! [18:39:00] I still cannot get to the video [18:41:50] delaniekirwan leaves the room [18:43:35] @Tina: I haven't seen any issues streaming video on my end. [18:43:46] Hi Tina, I can see the video. how about to use different web browser? [18:44:02] tina which website are you trying to use? [18:44:37] @Tina: as a test, have you tried the more-delayed https://oceanexplorer.noaa.gov/okeanos/media/exstream/exstream.html [18:45:09] @Tina: I realize you would prefer the lower latency full res version, but I'm suggesting it as a test of your current connectivity. [18:46:37] looks unstable [18:49:23] Atolla perhaps [18:49:33] looks like Poralia [18:50:15] beautiful image. thank oyu [18:50:23] thank you [18:51:09] Really distinct canals [18:52:46] michaelvecchione leaves the room [18:52:55] I cannot get to oceanosexplorer site [18:55:54] Tina - as an alternative you can try Ocean Exploration YouTube. I am using that today [18:59:41] @Tina: https://www.youtube.com/oceanexplorergov [19:01:19] erikcordes leaves the room [19:01:36] delaniekirwan leaves the room [19:03:19] shell mix of mussels and clams [19:05:10] single live mussel [19:06:12] Brine pool? [19:06:57] odd dark spot [19:07:53] "clams" use sulfide "mussels" use a mix of sulfide and/or methane..."clams" mobile and usually in mud [19:11:17] some places that have been studied show animals nicely distributed by chemical gradients...unfortunately it's no so simple in GoM [19:11:30] can you tell if this pool is newly forming or receding? do the brine pools act like that? (i.e., form then recede over time??) [19:12:03] guessing its been around for a long time due to dead mussels/clams? [19:13:43] andrea the best observed brine pool...NR-1 has been stable stable since ~~1990. But each one probably has different plumbing [19:14:09] interesting…thanks [19:16:55] kensulak leaves the room [19:16:58] Bill Shed...where is top of salt around here? [19:18:03] adamskarke leaves the room [19:18:17] FSh macrouridae [19:18:46] live mussel [19:19:54] A worth while project for a sediment chemist/microbiologist would be working out the story behind colors seen at seeps [19:23:42] mussels unusually distinct rings in shell [19:27:44] allencollins leaves the room [19:28:49] jimmasterson leaves the room [19:30:16] mussel age...there was speculation in Chuck Fishers early work that it could be several decades. [19:30:35] laurenjackson leaves the room [19:30:58] shell pavement [19:32:03] no one has aged bathymodiolus mussels? [19:32:16] solitary tubeworm left [19:32:53] extensive field of seemingly dead mussels [19:33:23] Chuck Fisher and Erik Cordes estimated the huge mussels at Atwater Valley 340 are possibly ~~50 years [19:34:27] Lamellibranchia? [19:34:36] looks like it [19:34:42] yes plume extended [19:36:37] Are seeps as dynamic/ephemeral as vents? [19:37:22] sorry missed the most recent comments [19:39:34] time course of seepage poorly known. Big carbonates features w/ live communities must be over a long-term conduit. [19:40:57] Thanks all, very interesting. [19:41:43] shells all disarticulated and jumbled...pavement has been "worked over" [19:42:05] jillbourque leaves the room [19:42:42] Harry Roberts has dated carbonates as old as 240,000 years old. [19:43:37] mikeford leaves the room [19:45:43] allencollins leaves the room [19:46:43] i emailed y'all a seismic image and amplitude map showing the deep source of the gas - probably thermogenic [19:50:31] Fish spa... [19:50:41] Thanks @Bill. [19:51:00] Thanks Bill. Great Data! [19:52:20] i think zoaricdae-but only got a quick look [19:52:25] an eelpout [19:53:55] adamskarke leaves the room [19:57:52] Larry Mayer at UNH as shown that a blue filter on your lights can show clouds of very fine mist of gas that are not visible on the EM302 (Indonesia). He couldn't see any visible bubbles but all the mussels were alive and healthy, thus there must have been active food source [19:59:54] 2 crabs...one under [20:00:08] danielwagner leaves the room [20:03:00] heavy settlement smaller mussels rt [20:05:03] dense smaller mussels [20:06:05] can you get good zooms of the head [20:07:00] not familiar to me… [20:07:31] Bythitidae [20:07:44] maybe Ophidiidae [20:08:13] idk it [20:08:29] thanks andrea [20:11:07] later! [20:11:13] andreaquattrini leaves the room [20:11:15] barite chimneys? [20:13:01] williamkiene leaves the room [20:16:10] barite crusts? [20:18:36] grey smooth material could be hydrate? [20:19:02] Later! [20:19:12] kevinrademacher leaves the room [20:20:40] sponge it is [20:22:04] Monomitopus [20:26:12] delaniekirwan leaves the room [20:28:34] judging from dead shells, more than one species of mussel [20:30:51] nickpawlenko leaves the room [20:31:51] danielwagner leaves the room [20:33:12] burrow casts carbonate [20:36:57] danielwagner leaves the room [20:37:00] katerose leaves the room [20:37:10] Don't think I can join the post-dive call today as I have a seminar to attend. [20:38:36] bcclass2 leaves the room [20:39:57] danielwagner leaves the room [20:41:06] thanks. have a nice night. [20:41:33] Getting excited for FULL DAY MIDWATER on Saturday. [20:41:37] no worries scott, "see" you tomorrow [20:42:00] mikeford leaves the room [20:42:20] paullarson leaves the room [20:43:26] I'll log off and you will instantly find an Acanella bamboo coral growing in the mud... [20:44:32] Thanks :) [20:46:27] you know it, scott [20:47:53] thank mike [20:48:45] We saw an anemone in a similar burrow a couple of dives ago. [20:49:58] scottfrance leaves the room [20:51:08] jonathanjackson leaves the room [20:52:23] adamskarke leaves the room [20:53:14] asakomatsumoto leaves the room [20:53:47] williamkiene leaves the room [20:53:48] Dive 07 Planning call at 4:05 PM CDT [20:53:49] robertmcguinn leaves the room [20:53:49] stevenauscavitch leaves the room [20:54:25] andrewshuler leaves the room [20:54:42] erineaston leaves the room [20:54:53] I'll passively watch camera 3 out of the corner of my eye. [20:55:50] amandademopoulos leaves the room [20:55:54] robertcarney leaves the room [20:59:18] carolynruppel leaves the room [20:59:28] Go Midwater! [21:00:32] tinamolodtsova leaves the room [21:01:19] megancromwell leaves the room [21:05:33] coelodendrid? [21:07:45] shrimp? red ctenoceros? [21:08:15] jelly [21:09:30] Solmissus [21:09:39] white socks type [21:09:56] myctophid? [21:10:45] pyrosome? [21:11:28] Beroe? [21:12:14] sergestid? [21:13:55] gelata [21:14:16] krill [21:15:01] adamskarke leaves the room [21:15:28] siph? Squink? [21:18:39] krill [21:19:01] siphonophore [21:20:06] pysonect [21:20:27] sorry, physonect. Maybe Forskalia or a twisted Nanomia [21:23:10] starfish? swept out of sample basket? [21:26:46] scottfrance leaves the room [21:27:01] fish [21:27:16] amybowman leaves the room [21:28:49] emmahickerson leaves the room [21:30:20] glad I woke up early to catch the tail end of this. Looking forward to midwater dive. Thx! [21:30:25] dhugallindsay leaves the room [21:42:28] nolanbarrett leaves the room [21:50:41] williamshedd leaves the room [22:01:44] amybowman leaves the room [22:11:49] scottfrance leaves the room [22:30:11] danielwagner leaves the room