[06:16:24] pierrejosso leaves the room [11:30:31] EX2104_DIVE05 ROV powered off [11:47:28] ****TEST - EX2104 DIVE05 - TEST**** [12:20:06] EX2104_DIVE05 ROV Launch [12:29:21] EX2104_DIVE05 ROV on Surface [12:30:12] EX2104_DIVE05 ROV Descending [12:30:13] EX2104_DIVE05 ROV Descending [12:31:51] LAT : 35.817783 , LON : -52.304133 , DEPTH : 24.5434 m, TEMP : 22.63513 C, SAL : 36.6275 PSU, DO : 7.53162 mg/l [12:36:52] LAT : 35.818063 , LON : -52.304746 , DEPTH : 92.6102 m, TEMP : 19.12854 C, SAL : 36.62907 PSU, DO : 7.31672 mg/l [12:41:52] LAT : 35.818468 , LON : -52.305924 , DEPTH : 244.543 m, TEMP : 18.58972 C, SAL : 36.61126 PSU, DO : 7.00584 mg/l [12:46:54] LAT : 35.818724 , LON : -52.306419 , DEPTH : 402.406 m, TEMP : 18.03563 C, SAL : 36.51129 PSU, DO : 6.77924 mg/l [12:51:54] LAT : 35.818692 , LON : -52.306389 , DEPTH : 550.4518 m, TEMP : 16.33574 C, SAL : 36.19939 PSU, DO : 6.0352 mg/l [12:56:55] LAT : 35.81872 , LON : -52.306559 , DEPTH : 703.04 m, TEMP : 13.69747 C, SAL : 35.77654 PSU, DO : 5.34092 mg/l [13:01:56] LAT : 35.818546 , LON : -52.306702 , DEPTH : 858.1514 m, TEMP : 10.29473 C, SAL : 35.3273 PSU, DO : 4.59625 mg/l [13:06:03] bramleymurton leaves the room [13:06:56] LAT : 35.818358 , LON : -52.306885 , DEPTH : 1001.5459 m, TEMP : 7.70368 C, SAL : 35.16337 PSU, DO : 5.8053 mg/l [13:11:57] LAT : 35.81817 , LON : -52.307036 , DEPTH : 1149.2383 m, TEMP : 6.45105 C, SAL : 35.15267 PSU, DO : 6.75977 mg/l [13:16:58] LAT : 35.817986 , LON : -52.307163 , DEPTH : 1298.3276 m, TEMP : 5.47317 C, SAL : 35.09484 PSU, DO : 7.51397 mg/l [13:20:54] nice looking gyot [13:21:59] LAT : 35.817795 , LON : -52.307327 , DEPTH : 1445.7809 m, TEMP : 4.88774 C, SAL : 35.05038 PSU, DO : 7.89102 mg/l [13:23:31] bramleymurton leaves the room [13:26:59] LAT : 35.817543 , LON : -52.307345 , DEPTH : 1592.2692 m, TEMP : 4.51172 C, SAL : 35.0148 PSU, DO : 8.1467 mg/l [13:31:59] LAT : 35.817261 , LON : -52.307437 , DEPTH : 1740.8031 m, TEMP : 4.25472 C, SAL : 34.99618 PSU, DO : 8.31262 mg/l [13:32:45] bramleymurton leaves the room [13:33:57] Bottom at around 10:53 EDT [13:34:03] Good morning) [13:34:09] Good morning Tina [13:35:07] Good morning! [13:35:14] oik [13:35:31] Good morning Dhugal [13:35:42] oik [13:36:43] quite a few oikopleurids turning up in camera 2 [13:37:00] LAT : 35.817031 , LON : -52.307505 , DEPTH : 1891.5387 m, TEMP : 4.04009 C, SAL : 34.98 PSU, DO : 8.37306 mg/l [13:40:01] bramleymurton leaves the room [13:42:00] LAT : 35.816966 , LON : -52.307513 , DEPTH : 2043.8101 m, TEMP : 3.92147 C, SAL : 34.98156 PSU, DO : 8.30383 mg/l [13:43:44] CAMERA 2. Very weird object. Glass squid maybe? [13:44:41] oik [13:45:53] bramleymurton leaves the room [13:46:20] Deep dive today, so expected ETA on the bottom (4190m) will be 10:53EDT [13:47:01] LAT : 35.816901 , LON : -52.307522 , DEPTH : 2190.0046 m, TEMP : 3.8056 C, SAL : 34.98545 PSU, DO : 8.2164 mg/l [13:49:04] got sent a framegrab of a really weird jelly you saw yesterday with thick tentacles. Very exciting and not one I have seen before... [13:52:01] LAT : 35.816904 , LON : -52.307454 , DEPTH : 2340.1237 m, TEMP : 3.64941 C, SAL : 34.97735 PSU, DO : 8.18972 mg/l [13:54:12] kimberlygalvez leaves the room [13:57:02] LAT : 35.816829 , LON : -52.307427 , DEPTH : 2489.3017 m, TEMP : 3.44359 C, SAL : 34.9634 PSU, DO : 8.23049 mg/l [13:59:24] jasonchaytor leaves the room [14:00:10] bramleymurton leaves the room [14:02:02] LAT : 35.816831 , LON : -52.307404 , DEPTH : 2640.3312 m, TEMP : 3.30301 C, SAL : 34.95646 PSU, DO : 8.15735 mg/l [14:03:39] jasonchaytor leaves the room [14:04:20] faesapsford leaves the room [14:06:31] bramleymurton leaves the room [14:07:03] LAT : 35.816835 , LON : -52.307348 , DEPTH : 2792.4873 m, TEMP : 3.1615 C, SAL : 34.94984 PSU, DO : 8.1973 mg/l [14:07:14] noellehelder leaves the room [14:12:04] LAT : 35.816663 , LON : -52.307307 , DEPTH : 2939.7919 m, TEMP : 3.04056 C, SAL : 34.94695 PSU, DO : 8.09287 mg/l [14:13:42] Hey all. Wife had surgery yesterday so I was in the hospital all day. Have another appointment this morning but hopefully it'll be short. I'll try to watch on my phone when able and comment. Good luck today! Great volcanic features yesterday. [14:15:21] HI Kevin, hope everything is alright and recovery is quick. Doing our best to get a suitable rock for each seamount, but the seamounts have made us work for it [14:17:04] LAT : 35.81676 , LON : -52.307206 , DEPTH : 3091.6494 m, TEMP : 2.9319 C, SAL : 34.94042 PSU, DO : 8.11125 mg/l [14:20:24] Are we there yet? [14:20:52] 33 minutes or thereabouts [14:21:32] Thanks Jason - landing depth is ~~4000m? [14:21:58] 4190 m [14:22:05] LAT : 35.81671 , LON : -52.307198 , DEPTH : 3243.6988 m, TEMP : 2.79897 C, SAL : 34.93182 PSU, DO : 8.12705 mg/l [14:23:24] bramleymurton leaves the room [14:24:16] faesapsford leaves the room [14:27:05] LAT : 35.816678 , LON : -52.30716 , DEPTH : 3391.0038 m, TEMP : 2.66256 C, SAL : 34.92397 PSU, DO : 8.14026 mg/l [14:27:31] lobate [14:28:28] kevinkonrad leaves the room [14:32:06] LAT : 35.816716 , LON : -52.307269 , DEPTH : 3544.7258 m, TEMP : 2.56394 C, SAL : 34.91669 PSU, DO : 8.19827 mg/l [14:32:26] faesapsford leaves the room [14:37:06] LAT : 35.816762 , LON : -52.307232 , DEPTH : 3694.4709 m, TEMP : 2.46409 C, SAL : 34.90953 PSU, DO : 8.13813 mg/l [14:38:38] About another 15 minutes until bottom [14:39:13] bramleymurton leaves the room [14:39:52] noellehelder leaves the room [14:40:14] faesapsford leaves the room [14:42:06] LAT : 35.816783 , LON : -52.307322 , DEPTH : 3849.5799 m, TEMP : 2.37435 C, SAL : 34.90222 PSU, DO : 8.11473 mg/l [14:43:23] There are a few gelatinous animals around but nothing I can ID at this speed.. [14:44:21] Dhugal@JAMSTEC/Japan [14:44:37] Good morning Dhugal! [14:45:14] Good morning. Almost midnight here. [14:45:35] Midnight in the abyssal zone - perfect! [14:45:50] Looking out for more baby giant squid! [14:46:34] Being eaten by even bigger jellies ;-) [14:47:06] LAT : 35.816781 , LON : -52.307195 , DEPTH : 3997.4748 m, TEMP : 2.30691 C, SAL : 34.89609 PSU, DO : 8.10626 mg/l [14:47:10] Me too - more baby giant squids! Good morning all! [14:47:46] At this depth we might see some Swima and Flota polychaetes? [14:48:52] oikopleurid [14:52:06] LAT : 35.816838 , LON : -52.307279 , DEPTH : 4115.0178 m, TEMP : 2.25759 C, SAL : 34.89118 PSU, DO : 8.10302 mg/l [14:52:56] Camera 1 still very dark. Might have been a siph there. Will keep looking at camera 2 [14:53:27] bramleymurton leaves the room [14:54:08] oh no. Now we won't see any squids ;-) G'day mike. [14:54:48] Hi Dhugal. [14:55:26] this is the expedition where we wish for things and they appear [14:55:30] Did you manage to get your hands on a video of the possible Architeuthis? [14:55:36] I will be monitoring the video but in an Zoom meeting for the next hour (or more). [14:56:08] I wish for a benthic ctenophore flying above the sediment on threads [14:56:54] kimberlygalvez leaves the room [14:57:05] noellehelder leaves the room [14:57:07] LAT : 35.816949 , LON : -52.307542 , DEPTH : 4143.4329 m, TEMP : 2.25641 C, SAL : 34.88993 PSU, DO : 8.04934 mg/l [14:58:21] 15m off bottom [14:58:23] @dhugal -- I saw it on SeaTube.. Distinguishing Archi from Narrowteuthis in the vide became dependant on size. The size estimate I saw yesterday (1-2 feet) favors Narrowteuthis. If it was 1-2 inches I could have argued for Archi. [14:58:36] Gotta go zoom [14:59:07] bottom in sight [15:00:04] EX2104_DIVE05 ROV on Bottom [15:01:37] Nice to see it is not a sediment plain (no offense Jason!). Looks like good opportunity for a loose rock. [15:01:58] I mean, looks like there *will* be good opportunity for rock. [15:02:04] I'm representing many hats and trying to be too biased :-) [15:02:05] Pilots are just setting up and will let me know when they are ready [15:02:07] I realize we are not yet ready to go. [15:02:08] LAT : 35.816792 , LON : -52.307572 , DEPTH : 4163.4266 m, TEMP : 2.25347 C, SAL : 34.89044 PSU, DO : 8.00663 mg/l [15:03:09] upasanaganguly leaves the room [15:03:22] @Rhian: I only meant to say that the bottom here looks "rubbly" and not smooth and consolidated, so good potential for future collecting. [15:03:26] it is not sedimented... [15:03:41] we are going to try and get a rock here just in casse [15:03:46] case [15:04:33] I actually see a stalked something in the background! More good signs! [15:04:45] @Jason, less FeMn crust here so you might get a volcanic rock sample....! [15:04:46] and sponge in foreground [15:05:02] Nice landing spot! [15:05:25] angle wrong to see if zoanthids on sponge stalk.. [15:06:14] @Rhaian: that looks good [15:06:23] Bolosoma sponge on stalk...? [15:07:09] LAT : 35.816721 , LON : -52.307563 , DEPTH : 4168.0279 m, TEMP : 2.24872 C, SAL : 34.91512 PSU, DO : 8.00861 mg/l [15:08:24] pillow tops? [15:08:38] looks like pillow tops-yes [15:10:28] Some of these may be loose [15:11:10] angular rocks ahead [15:11:24] Setting up to try that one dead center [15:11:54] jillbourque leaves the room [15:11:59] @jason, these look promising [15:12:09] LAT : 35.816977 , LON : -52.307534 , DEPTH : 4170.9537 m, TEMP : 2.24606 C, SAL : 34.92164 PSU, DO : 7.96943 mg/l [15:12:14] yeah, the one under the laser is the target [15:12:21] √ [15:13:15] chairing the session at Goldschmidt and keeping an eye on the stream i jumped thinking "we need that piece!" Glad to see you were on target already Bram [15:14:02] haroldcarlson leaves the room [15:14:21] By "the other side" I thought you meant we had to tunnel under it! ;-) [15:14:33] :) [15:14:46] the book-like rock on the stb skid looks good too [15:17:09] LAT : 35.816865 , LON : -52.307649 , DEPTH : 4171.0761 m, TEMP : 2.24386 C, SAL : 34.94023 PSU, DO : 8.00321 mg/l [15:18:14] No returns once you leave the store... [15:18:33] @Jason - thats a good one - ! [15:19:10] :) :) [15:19:42] good amount of it was beklow the sediment surface, so may have prevented some amount of FeMn accumulations [15:20:06] leswatling leaves the room [15:20:41] good point - and the rock here looks like lava flows so hopefully its an in-situ volcanic sample [15:21:06] upasanaganguly leaves the room [15:22:07] @Pierre one good rock in the box - not much crust and probably volcanoc [15:22:11] LAT : 35.816891 , LON : -52.30752 , DEPTH : 4171.1234 m, TEMP : 2.24137 C, SAL : 34.95703 PSU, DO : 8.0519 mg/l [15:22:50] The bamboo coral would be worth a look. This is VERY deep for a bamboo coral. [15:23:03] I think there may only be 2 records below 4000 m depth... [15:23:19] When we zoomed in we could see a lot of thick FeMn crust on the outcrop [15:23:24] There was a live one but we just passed over it. [15:23:45] FeMn seems patchy [15:24:07] @Jason might that indicate recent instability and rock falls? [15:25:05] The bamboo tried but it didn't make it... [15:25:25] bramleymurton leaves the room [15:25:32] WE're going to look for the live ones [15:25:49] @Les: there was a live one when we first got down, so hopefully we'll see more [15:26:11] leswatling leaves the room: Replaced by new connection [15:27:10] LAT : 35.816861 , LON : -52.307612 , DEPTH : 4165.8947 m, TEMP : 2.25737 C, SAL : 34.9946 PSU, DO : 8.03238 mg/l [15:27:22] dhugallindsay leaves the room [15:27:40] @Scott, oh good, would be great to see what it is [15:27:43] Another bamboo here [15:28:04] there are some interesting slab-like rocks here [15:28:56] probably should take a piece of this [15:29:00] Yes [15:29:05] Can you spell that name for me [15:29:29] Bathygorgia [15:29:44] this would be the deepest bamboo collection in the Atlantic [15:30:09] jaymesawbrey leaves the room [15:31:38] That is such a beautiful coral! [15:31:43] Great start to this dive with that rock collection and this observation [15:32:11] LAT : 35.816875 , LON : -52.307705 , DEPTH : 4167.9565 m, TEMP : 2.24182 C, SAL : 35.0404 PSU, DO : 8.05256 mg/l [15:32:14] why the nodes in bamboos? flexibility, I presume? thicker nodes in higher current regimes? [15:32:48] node right at base, internodes very long [15:33:55] It's a really fascinating sample! [15:34:09] Can I answer Cindy's question on air, or would pilots prefer some peace and quiet right now? [15:34:26] Theyve asked for quiet when sampling [15:34:40] But as we get moving that would be great! [15:35:10] Copy that [15:35:23] I missed a name for the stalked sponge... resend please? [15:36:32] Euplectellid - but unknown species, we collected one a couple of dives ago. Really abundant here! [15:36:49] thanks [15:36:50] @Cindy: probably family Euplectellidae... Earlier a slightly different morph stalked sponge was IDed as Bolosoma [15:36:52] noellehelder leaves the room [15:36:53] johndeitz leaves the room [15:37:11] LAT : 35.816815 , LON : -52.30754 , DEPTH : 4167.8763 m, TEMP : 2.24335 C, SAL : 35.14808 PSU, DO : 7.99681 mg/l [15:38:46] @Cindy we can go to the euplectellid subfamily bolosominae which includes all of the stalked forms [15:39:21] thanks...I'm making myself a lttle bestiary with screen snaps, so names help [15:39:57] jillbourque leaves the room [15:40:43] @Cindy: just to be sure you are aware of it, I post this link here: https://oceanexplorer.noaa.gov/okeanos/animal_guide/animal_guide.html [15:41:09] Chris K led this effort and it is a fantastic resource [15:41:33] very nice piece! [15:42:11] LAT : 35.816728 , LON : -52.307624 , DEPTH : 4167.8663 m, TEMP : 2.24544 C, SAL : 35.21642 PSU, DO : 7.95018 mg/l [15:42:36] Well, it will be exciting to learn if that is indeed Bathygorgia. If so, it suggests that genus has a worldwide distribution at these abyssal depths (having been found in Tasmania and central Pacific) [15:42:37] Not completely sure this is Bathygorgia. But that genus so far is a "catch all" for things that sort of look alike. Scott's genetic data suggests more than one clade is represented, so far [15:42:55] @Scott - yes a terrific resource, but images are not restricted to NW Atl, right? My little snaps give me some images potentially more relevant to Cape Fear, Blake, I imagine. from everywhere, right? [15:43:40] Just a fun fact. I highly suspect that the name bolosominae and the genus Bolosoma were named after "bolas" that is an ancient throwing weapon. They look like round balls attached to a thin rope. [15:44:53] That's interesting!!! [15:45:12] georgematsumoto leaves the room [15:46:17] @Cindy: correct. An Atlantic guide is currently being prepared by the U Hawaii group (led by Jeff Drazen). [15:47:12] LAT : 35.816939 , LON : -52.307764 , DEPTH : 4168.8624 m, TEMP : 2.25839 C, SAL : 35.25052 PSU, DO : 7.95391 mg/l [15:47:35] @Cindy: I didn't read your question clearly enough! The current giude is based on Pacific expeditions and fauna. The new guide will use images from the Atlantic, which I believe will be biased to NW Atl [15:47:49] noellehelder leaves the room [15:47:50] pierrejosso leaves the room [15:49:23] Thanks for the info, Kim! [15:49:32] Urchin? [15:49:55] @Cindy My old lab at the University of Hawaii, now called the DARC lab, has prepared a set of images from the NW Atl taken during EX cruise 1905. They will be incorporating them into the next version of the online guide I think. [15:50:15] echinothurid? [15:50:37] spines are really short [15:50:56] and polynoid polychaete, e.g. scale worm [15:51:02] Not an echinothuriid [15:51:17] It's a weird echinothurid if it is in that family [15:51:19] an irregular.. sort of like a casiduloid or some of those weird ones [15:51:36] beautiful polychaete! [15:51:40] This is the value of telepresence - getting all this information from multiple experts. No one person can know it all. [15:52:09] Chris Mah's guess is what you should go with. Irregular was my second choice and there are some pretty regular irregulars [15:52:13] LAT : 35.816822 , LON : -52.307577 , DEPTH : 4168.0403 m, TEMP : 2.25545 C, SAL : 37.66967 PSU, DO : 7.93512 mg/l [15:52:34] Love it: a regular irregular [15:52:53] Irregular urchins are not echinothurids so my family guess was wrong [15:53:09] we collected a green urchin like this in the Emperor seamounts. Need to look up the name [15:53:23] Irregulars include sand dollars and heart urchins [15:53:34] ~~Jason What is the expected age of this seamount? [15:53:36] likely more sediment settles on top that the sides which make FeMn easier to precipitate on the sides. [15:54:05] Munidopsis sp I think for the white squat [15:54:32] kelseyviator leaves the room [15:54:54] Another isidid on left [15:55:00] off side of rock [15:55:22] Most likely the same "Bathygorgia" as we collected [15:56:15] noellehelder leaves the room [15:57:13] LAT : 35.816929 , LON : -52.307685 , DEPTH : 4172.8515 m, TEMP : 2.25375 C, SAL : 40.42659 PSU, DO : 7.81521 mg/l [15:57:20] Are we getting a snap zoom on this sponge? [15:57:36] I see we are! [15:57:40] :-) [15:57:45] jillbourque leaves the room [15:58:20] Irregular urchin.. name: Pilematechinus https://www.ncei.noaa.gov/waf/okeanos-animal-guide/Irregularia004.html [15:58:45] I think the green urchin from the Emperors was a Pilematechinus. An irregular that suggested it should be in the sediment but it was on the rock [15:58:53] I am fairly certain this is some species of rossellid [15:59:08] Is it just me who sees "object object" from Chris M? e.g. his paste did not come through? [15:59:54] kiramizell leaves the room [15:59:59] Rossellids tend to have a bit of fringe on their edges which are actually the axes of dermal spicules that are sticking out from the body of the sponge [16:00:44] The stalked sponge in the distance is not the same as the one near your collection site. I think it could be a Caulophacus sp but need a closer look [16:01:19] The one I am talking about is center in the back [16:01:49] Sorry, false alarm, I think it is the same now that I see it better [16:02:13] LAT : 35.816913 , LON : -52.307597 , DEPTH : 4174.0632 m, TEMP : 2.25545 C, SAL : 40.64763 PSU, DO : 7.69394 mg/l [16:03:06] @Jason, are these seamounts related to the Great Meteor hotspot? [16:03:07] @Rhian, I was thinking that at some point in the Corner Rise section of this cruise it would be great to give a shoutout to Barbara(?) McGregor who was the first to map this seamount group. Peter Auster isn't on today but I think he might have some info to add about her background, etc. [16:03:28] Any chance you could run over that line of sponges and perhaps a quick snap zoom on your way up? [16:03:49] Justs doing a watch change here - standby [16:03:59] @Chris K: this is looking a lot like one of the deep 2015 dives when I was on board (down toward Johnston Atoll), where the sponges were dominant and we saw an occasional giant solitary hydroid. [16:05:08] Perhaps more sediments here than on that 2015 dive. [16:05:14] I guess sponges are better at tolerating these depths than corals. I agree Scott that sponges tend to be dominant this deep [16:05:18] They're going to try - we were on a high which is messing with our distnace off bottom - looks like they can set it up a little [16:06:02] kiramizell leaves the room [16:06:03] @Chris - is it depth? or is that shorthand for less/oorer quality food for corals? [16:06:15] *poorer [16:06:39] Well...............????????????? [16:07:14] LAT : 35.817147 , LON : -52.307371 , DEPTH : 4179.2709 m, TEMP : 2.25454 C, SAL : 40.87926 PSU, DO : 7.63075 mg/l [16:07:44] can we collect? [16:07:49] @Cindy, I think it is food. We have a bamboo from Tasmania at this depth that had a very large axis, large polyps, etc., looked really robust. That area is like the Aleutians, with deep water upwelling all the time and lots of plankton delivery to the bottom [16:07:58] these are ceriantharia [16:08:01] bramleymurton leaves the room [16:08:03] @Cindy, who knows. Definitely could be food related or an environmental factor [16:08:13] possibly Botrucnidifer [16:08:31] they are living inside dead sponge [16:08:33] Ah! [16:08:43] These could be demosponges, similar to Stelodoryx. I really have no idea what these are. [16:08:48] We're really stretched out at an awkward angle right now - do we want to set up to try to colect some sponge [16:09:15] Well yeah if could, that would be fantastic [16:09:22] at least these from Pacific, that Meagan collected at Musicians were Botrucnidifer [16:09:34] I think they could be the same also Rhian [16:09:39] jaymesawbrey leaves the room [16:09:40] I agree, these are really unusual and at a really deep depth [16:09:55] Thanks @Chris, it's hard to know but they look similar in basic morphology [16:09:58] @Tina: cool. I haven't seen those cerianthids before. Now I know to look more closely! [16:10:17] CiaraLarence leaves the room [16:10:21] no way for cerianthiids?)) these are EASY to grab, not like previous one [16:10:29] It's a short dive because of the depth [16:10:58] I don't think we can get back there Tina, they're more behind us now, already were when they visualized them. [16:11:09] adult and youngsters @Chris or two different species? [16:11:39] kimberlygalvez leaves the room [16:11:41] I think adults and youngsters [16:11:43] it looks like these sponges were crawling and leaving trace of smaller sponges [16:12:14] LAT : 35.817144 , LON : -52.307392 , DEPTH : 4182.4629 m, TEMP : 2.25612 C, SAL : 40.67284 PSU, DO : 7.69486 mg/l [16:12:24] Like those ones in the arctic Tina! :) [16:12:27] Quite a difference as they grow then. The smaller ones all appear to be scooped on one side, and the largest one is more "full" (3-dimensional?) [16:12:48] We have seen lines of deep demosponges at other sites. Don't know if this just shows prevailing current direction coupled with the adult releasing competent larvae ready to settle [16:12:52] @Rhian, do not worry, but it is fun to have practically the same species at both sides of continent [16:13:07] I agree, thanks Rhian [16:13:12] For sure! [16:13:17] @Chris, may be it is a way how propagules go [16:13:32] Could also be a growth form like a stolon type thing. [16:13:42] Some sponges have very short pelagic larvae...not sure if some crawl too [16:14:03] for the last half hour or so the salinity sensor is off, now showing 40 psu... unless we are in the bottom of the Red Sea or something.... [16:14:10] All of these suggestions are possible [16:14:45] The fact they are so lined up suggests to me the "stolon" type idea, rather than separate larval settlements. Unless that position on the rock is so perfect for early larval growth. [16:14:48] Yeah, I think it could be a demosponge. [16:14:49] may be gemules? [16:15:06] one holey sponge! [16:15:24] I wonder too @Chris, i've listed it as potential demosponge [16:15:34] Jason, it is also crust? [16:16:16] @Rhian, I think that is the best guess until it can be looked at under a scope. [16:16:19] appears to be thin crust if any, but it is scattered as we are seeing primary flow textures [16:16:55] @Tina, yeah that could be possible as well [16:17:14] LAT : 35.81721 , LON : -52.307488 , DEPTH : 4182.4031 m, TEMP : 2.25533 C, SAL : 40.65529 PSU, DO : 7.64049 mg/l [16:18:07] Valuable early collections today! [16:18:08] Great collecting job! [16:18:24] we aim to please [16:18:41] Maybe we could zoom on the rock where the sponges are! [16:18:47] to see if they are connected... [16:19:18] They do not appear to be connected, and no evidence that they were previously. [16:19:44] maybe larvae.... [16:19:48] michaelvecchione leaves the room [16:20:31] @Les: must be... Or some kind of propagule. [16:21:16] interesting that there were dark spots all over the rock surfaces. Maybe lots of larvae but not all make it [16:21:23] those rocks look freckled - dark spots diffent (in addition to?) from the botryoidal shapes [16:21:55] I wonder if those are larvae as well, [16:22:11] There were many smaller sponges dotted around [16:22:15] LAT : 35.81729 , LON : -52.30728 , DEPTH : 4181.565 m, TEMP : 2.24199 C, SAL : 40.82228 PSU, DO : 7.57583 mg/l [16:22:38] Sediment!! [16:23:03] no fish? [16:23:17] @Tina: no fish yet [16:23:30] no pens? [16:23:44] This is the first sediment we've seen Tina [16:23:56] @Tina: no pens. :-( [16:24:04] oh, sometimes they are rockpens) [16:24:34] @Tina: wouldn't that be exciting?! A rock pen at 4000 m! [16:24:45] Very!! [16:25:15] tiny-winy rockpen)) [16:25:21] Looks like a gastropod shell from a distance... [16:25:23] may be bryozoan [16:25:46] Perhaps a burrowing urchin test... [16:25:56] Okay, I'm going to stop guessing and wait! [16:26:08] kiramizell leaves the room [16:26:43] sargassum [16:27:15] LAT : 35.817327 , LON : -52.307263 , DEPTH : 4188.449 m, TEMP : 2.24035 C, SAL : 41.01954 PSU, DO : 7.69705 mg/l [16:27:17] under all that sand there are almost certainly nematodes! [16:27:19] colony is probably Bryozoa [16:27:41] not this [16:28:02] a forma? [16:28:05] this one may be kind of Foram [16:28:06] a weird xeno? [16:28:07] foram [16:28:14] there was something infromt of this [16:28:15] Sorry for the cross-talk! the delay [16:28:16] I was thinking foram too, but weird [16:28:36] a foram made out of pelagic foram tests.... [16:28:38] colony is Bryozoan. [16:28:42] both [16:29:22] even zooids are visible) [16:29:29] I'd say bryo too [16:29:45] )) I told bryo three times) [16:30:18] salinity is now over 41 [16:30:40] Note it is on a lone rock. As far as I know, Bathygorgia does not grow in sediment, but some other whip corals do. [16:30:51] I am not listening to audio so maybe something has been said about that [16:31:06] @Les: no, no response yet. [16:31:08] holothurians usually leave tracks [16:31:38] I don't have easy access to that screen sorry Les, [16:32:09] interesting current scour around the rock [16:32:15] LAT : 35.817377 , LON : -52.307189 , DEPTH : 4188.0321 m, TEMP : 2.25454 C, SAL : 41.17313 PSU, DO : 7.53884 mg/l [16:33:47] Cladorhizid perhaps as Scott suggested (carnivorous sponge) [16:34:14] internode length on the bamboo is impressive [16:34:23] @Rhian: you should be able to see the periodic okexnav entries to the chatroom. That is where Les is seeing the exceedingly high salinity reading. [16:34:27] That looked like a bryozoan [16:34:55] I would agree, all the erratics OER recovered from the Atlantic shelf region had very thin coatings of FeMn [16:35:23] @Les: I can confirm that at least on the data chart being streamed on camera 3, it also shows salinity at 41 PSU [16:35:24] Sediment usually produces "grainy" video anyway [16:35:34] T and DO look ok, but S is high... periodically it cycles back to 35 something, which is likely correct [16:35:45] jillbourque leaves the room [16:35:49] @Les, I have asked for it to be looked at. [16:36:13] there was a turbidity spike as well [16:36:33] Maybe same demosponge as was collected [16:36:39] there would have to be some kind of cold briney seep to give that high a S, but then one might expect DO to be low, so I think the sensor must be acting up [16:36:56] thanks@Rhian [16:37:15] LAT : 35.817434 , LON : -52.307073 , DEPTH : 4187.92 m, TEMP : 2.24889 C, SAL : 41.31483 PSU, DO : 7.66995 mg/l [16:38:26] It's sleeping [16:38:28] Spomge is a victim of its own success. [16:38:38] sponge is too big for its rock [16:39:28] heatherjudkins leaves the room [16:40:06] kiramizell leaves the room [16:40:06] Years ago Verenna Tunniclife published a cool paper on how corals attached to boulders on the sill of fjords created enough drag that the current would carry them over the sill into the poorly oxygenated water! https://aslopubs.onlinelibrary.wiley.com/doi/abs/10.4319/lo.1983.28.3.0564 [16:40:49] This "bryozoan" sure looks like a sponge to me! [16:41:14] I mean the one at the base on right of bolosomiae [16:41:17] Which bryzoan? [16:41:23] that one looked like cladorhizid [16:41:32] Thanks Megan! [16:41:54] That is what I thought we were looking at earlier in the sediment - one of those sponges slightly overgrown [16:41:59] Ah, I missed that, I didn't spot either a bryzoan or a cladorhizid... [16:42:16] LAT : 35.817517 , LON : -52.306871 , DEPTH : 4187.371 m, TEMP : 2.23798 C, SAL : 41.40432 PSU, DO : 7.55698 mg/l [16:42:19] in either case, if we see it again it should be collected [16:42:37] @Rhian: it has very "transparent" branches and appears to be a thin stick when we are zooming in. Hard to see. [16:42:47] sea pen? [16:43:05] @Harold: don't see one. But would like to! [16:43:09] Good to know, i'll keep better eyes on the screen, too many other tasks back here... [16:43:25] @Rhian: I know all too well! [16:43:31] That stalked sponge may be different, perhaps Crateromorpha, which is in the Rossellidae but its hard to say. If its a euplectellid, probably Hyalostylus [16:43:39] That is why you have all these other eyes on shore helping. [16:44:12] Too true, though I can see that having two co-leads on the ship would make life easier! [16:44:28] @Chris: I'm going to stop making any guesses on sponge beyond glass sponge/demosponge! [16:45:59] Ahh, don't do that Scott. I think it is always good to try to identify things as best we can, even if wrong. Someone later will be looking at the video very closely and may or may not go with our guesses [16:46:04] and even then it could be risky! [16:46:38] How do we learn if we always take the safe route and identify only to class [16:47:01] whitish colored sediment "balls" - thiningnthat they are just slightly more consolidated material turned over by the sediment burrowers [16:47:05] @Chris: yes, and those people will be saying "Man, that Scott guy really gets a lot of stuff wrong." :-) [16:47:08] jaymesawbrey leaves the room: Replaced by new connection [16:47:10] for-sure xeno just passed by [16:47:16] LAT : 35.817656 , LON : -52.306754 , DEPTH : 4186.6473 m, TEMP : 2.24228 C, SAL : 41.49144 PSU, DO : 7.60704 mg/l [16:47:57] Well, those people may be stimulated to collect what we identified to prove us wrong. [16:48:21] heatherjudkins leaves the room [16:48:57] Do we intentionally not have lasers on, or are we just zoomed in too much to see them? [16:49:36] meganmcculler leaves the room [16:50:36] anemone [16:51:13] So transparent... [16:51:38] @Chris: any chance this could be a corallimorph? I realize the tentacles are not bulbous... [16:52:05] I don't think it's a corallimorph [16:52:12] No idea. I usually think of those as having the balls [16:52:17] LAT : 35.817647 , LON : -52.306786 , DEPTH : 4185.3891 m, TEMP : 2.22696 C, SAL : 41.55577 PSU, DO : 7.63391 mg/l [16:52:30] Bulbs @Chris, Bulbs :) [16:52:58] Bulbs, yes sorry. [16:53:35] The way these rocks are clustered makes me think they're ice-rafted erratics. [16:54:35] I was talking and missed the corallimorph comments. Funniest stuff I've read today! [16:54:40] The ice-rafted erratics found on land among megaflooding deposits and glacial lakes tend to form clusters of rocks where a chunk of ice melted off and dropped them [16:54:43] @kevin, right, it is why I am hesitent to go for a collection. We should be back into some outcrop again soon, so hopefully another opportunity [16:54:57] @Scott anemones with balls would be way funnier [16:55:05] haroldcarlson leaves the room [16:55:07] I agree not to collect. There were some cool rocks gathered on the shelf expedition but no one has requested them yet [16:55:35] @Rhian: I'm looking forward to our on-air discussion of anemones with balls and assfish. [16:55:50] :) [16:56:07] The abyss is full of all sorts of wonders. [16:56:51] Mysid [16:57:18] LAT : 35.817823 , LON : -52.306613 , DEPTH : 4181.5053 m, TEMP : 2.2282 C, SAL : 41.61735 PSU, DO : 7.56371 mg/l [16:57:26] bryozoan? [16:57:29] @scott we have renamed them burro-fish [16:58:29] Good call Rhian [16:58:40] Same demosponge I think [16:58:49] looks cupcoral for me [16:59:08] This anemone has balls [16:59:21] Oops, sorry, bulbs [16:59:32] or carallimorpharian? [16:59:46] corallimorpharian [16:59:47] Agree Tina [17:00:10] Platyctenid ctenophore? [17:00:14] Good eyes scott [17:00:25] great spot, it does look like a benthic ctenophore! the tentacle looks like it has tentillae [17:00:47] Yes, be good to get a look from the side at the cup coral/corallimorph, as it does hve small balls....bulbs... [17:01:02] @George: this is so deep! How deep are they known to occur? [17:01:27] Note also something in the burrow to right [17:01:46] and there is a hole [17:01:51] This is the deepest that I know of. not many vehicles are getting beyond 4000 meters [17:02:05] What are you referring to Tina [17:02:18] LAT : 35.817819 , LON : -52.306417 , DEPTH : 4180.9167 m, TEMP : 2.23498 C, SAL : 41.69902 PSU, DO : 7.6242 mg/l [17:02:20] I think I see soft tissue in contact with rock, Rhian... [17:02:24] and a polychaete in hole [17:02:34] Ah, ok I see it now [17:02:45] jillbourque leaves the room [17:03:17] I can't see that that "tentacle" is actually coming from the brownish presumptive platyctenid... [17:03:24] second worm coming [17:03:28] 2 worme in 2 burrows [17:03:33] reminds me of the book Dune :-) [17:03:40]