[00:10:03] Amy Wagner leaves the room [00:23:38] Alexis Weinnig leaves the room [00:32:04] Alexis Weinnig leaves the room [01:15:25] Alexis Weinnig leaves the room [01:17:36] Alexis Weinnig leaves the room [02:36:15] kaseycantwell leaves the room: Replaced by new connection [03:20:19] kaseycantwell leaves the room [05:31:20] kaseycantwell leaves the room [10:26:58] chat-admin leaves the room [10:43:45] bradleystevens leaves the room [11:30:28] EX1903L2_DIVE19 ROV powered off [11:51:37] test [12:30:05] EX1903L2_DIVE19 ROV Launch [12:40:42] EX1903L2_DIVE19 ROV on Surface [12:41:22] EX1903L2_DIVE19 ROV Descending [12:42:15] LAT : 36.865063 , LON : -74.485711 , DEPTH : 15.3144 m, TEMP : 20.202 C, SAL : 32.61885 PSU, DO : 8.7665 mg/l [12:47:16] LAT : 36.864717 , LON : -74.485389 , DEPTH : 72.2736 m, TEMP : 12.99911 C, SAL : 34.98051 PSU, DO : 6.80294 mg/l [12:52:16] LAT : 36.864416 , LON : -74.485195 , DEPTH : 211.2285 m, TEMP : 12.01025 C, SAL : 35.52218 PSU, DO : 4.41731 mg/l [12:57:17] LAT : 36.864363 , LON : -74.485263 , DEPTH : 360.1555 m, TEMP : 8.37968 C, SAL : 35.15451 PSU, DO : 4.87072 mg/l [13:02:17] LAT : 36.864279 , LON : -74.485326 , DEPTH : 510.326 m, TEMP : 5.94315 C, SAL : 35.06233 PSU, DO : 6.78421 mg/l [13:07:18] LAT : 36.864212 , LON : -74.485505 , DEPTH : 665.6144 m, TEMP : 5.0979 C, SAL : 35.01466 PSU, DO : 7.55684 mg/l [13:12:18] LAT : 36.863956 , LON : -74.485307 , DEPTH : 821.2062 m, TEMP : 4.54956 C, SAL : 34.98175 PSU, DO : 8.04177 mg/l [13:14:54] Good morning [13:15:00] Good morning! [13:16:49] I'm on the call, but we are not being broadcast. Is that intentional? [13:17:19] LAT : 36.863709 , LON : -74.485334 , DEPTH : 974.3077 m, TEMP : 4.36066 C, SAL : 34.97002 PSU, DO : 8.16613 mg/l [13:17:19] nevermind. I had the volume too low. [13:17:21] oops [13:18:13] good morning @carolynruppel @taraluke [13:18:41] @Alexis---That is a great map Shannon just put up! [13:22:19] LAT : 36.86353 , LON : -74.485314 , DEPTH : 1137.2885 m, TEMP : 4.2344 C, SAL : 34.96309 PSU, DO : 8.21832 mg/l [13:27:20] LAT : 36.863484 , LON : -74.485215 , DEPTH : 1293.7451 m, TEMP : 4.10498 C, SAL : 34.95925 PSU, DO : 8.32776 mg/l [13:30:22] Hi Bob! [13:32:20] LAT : 36.863537 , LON : -74.485339 , DEPTH : 1445.5105 m, TEMP : 3.93997 C, SAL : 34.9545 PSU, DO : 8.35599 mg/l [13:35:02] bernardball leaves the room [13:36:01] @ good morning Carolyn [13:37:20] LAT : 36.863537 , LON : -74.485287 , DEPTH : 1601.3716 m, TEMP : 3.82643 C, SAL : 34.95043 PSU, DO : 8.3293 mg/l [13:38:55] EX1903L2_DIVE19 ROV on Bottom [13:38:59] seafloor in sight [13:41:55] bernardball leaves the room [13:42:21] LAT : 36.863675 , LON : -74.486108 , DEPTH : 1619.5858 m, TEMP : 3.82803 C, SAL : 34.95146 PSU, DO : 8.32682 mg/l [13:44:26] halosaur [13:47:21] LAT : 36.863789 , LON : -74.485868 , DEPTH : 1620.4256 m, TEMP : 3.82627 C, SAL : 34.95259 PSU, DO : 8.75238 mg/l [13:49:37] no pressure there... [13:49:59] Alexis Weinnig leaves the room [13:52:11] USGS Director Reilly has studied chemo sites in the Gulf of Mexico and is really interested in this work! I spoke with him a few weeks ago at an event at our Center [13:52:22] LAT : 36.863853 , LON : -74.485966 , DEPTH : 1620.0477 m, TEMP : 3.83261 C, SAL : 34.95136 PSU, DO : 8.65487 mg/l [13:53:18] @Cheryl--Good to know. John Haines (PC for Coastal & Marine) and I have been talking about this OER expedition and Falkor program, and of course I'll be talking with Haines about Gallaudet's upcoming meeting with Reilly. Thank you! [13:53:26] blue hake Antimora rostrata [13:53:37] @carolynruppel thanks so much for talking on the line there!!! [13:54:03] @Alexis--wanted to make sure the high level got in front of him, and I'm in a better position to say that as an outsider [13:55:52] totally agree [13:57:22] LAT : 36.863945 , LON : -74.486174 , DEPTH : 1620.0017 m, TEMP : 3.8293 C, SAL : 34.9503 PSU, DO : 8.57949 mg/l [13:58:58] kaseycantwell leaves the room [14:02:23] LAT : 36.864009 , LON : -74.48638 , DEPTH : 1618.8435 m, TEMP : 3.8261 C, SAL : 34.95141 PSU, DO : 8.54398 mg/l [14:03:43] johnreed leaves the room [14:07:23] LAT : 36.864232 , LON : -74.486479 , DEPTH : 1618.3795 m, TEMP : 3.82533 C, SAL : 34.95139 PSU, DO : 8.49028 mg/l [14:09:15] 100 m traveled [14:12:24] LAT : 36.864185 , LON : -74.486142 , DEPTH : 1618.993 m, TEMP : 3.82632 C, SAL : 34.95179 PSU, DO : 8.46656 mg/l [14:14:09] Hello all [14:14:48] @Asako Hello! [14:14:54] adriennecopeland leaves the room [14:15:28] Hello @asakomatsumoto! Glad you could join us for the last dive. [14:15:52] zoom on fish rather than chimera [14:16:16] I think it was a spiny eel [14:16:21] sorry @michaelvecchione that is the video teams request... [14:16:29] adriennecopeland leaves the room [14:16:38] @Nolan @Amy Hi! glad to join the last dive! [14:16:51] Hi all! [14:16:54] @Mike It didn't swim like a cutthroat eel. [14:17:02] @Asako Me too! [14:17:06] Hi Megan! Hi Asako! [14:17:24] LAT : 36.864366 , LON : -74.486079 , DEPTH : 1618.6321 m, TEMP : 3.8288 C, SAL : 34.95043 PSU, DO : 8.42517 mg/l [14:18:12] I'd say yesterday's dive was also a bryozoan fest :D [14:18:37] @Megan Absolutely! [14:19:07] Muusoctopus johnsonianus [14:19:25] @Amy Both are molluscs! [14:19:37] unique because it has revers countershading [14:19:42] reverse [14:20:30] doesn't like all the light [14:21:13] There is no (or very little) natural light at this depth, so color shouldn't make much difference. Yet many creatures have rather large eyes. [14:21:20] @michaelvecchione I wouldn't like all the light either! [14:21:35] lots of things are bioluminescent [14:21:39] Looks like it's imitating some fallen sargassum on the sediment [14:21:42] they must be adapted to detect bioluminescence [14:22:25] LAT : 36.864594 , LON : -74.485804 , DEPTH : 1618.2717 m, TEMP : 3.82582 C, SAL : 34.95198 PSU, DO : 8.38026 mg/l [14:22:27] slickhead [14:22:38] It was posing for us! [14:22:39] Whalefalls (or other foodfalls) probably attract lots of bioluminescent critters that would advertise their presence like fireflies on a summer night. [14:23:00] alepocephalid [14:23:42] burrow cluster [14:23:46] I defer, however, to any fish people who might be participating [14:24:41] adamskarke leaves the room [14:24:50] Crustacean eyes can be damaged by exposure to full strength sunlight. Makes me wonder if ROV lights create similar problems. [14:24:58] Nice - we don't often get to see the tube so well. [14:25:06] Yes, order Ceriantharia [14:25:47] Specialized cnidocysts they use to build the tube, incorporating mucus and surrounding mud. [14:27:12] If you have one in an aquarium and take it out of its tube, it will almost immediately start building a new one! [14:27:19] Guess they don't like being naked. [14:27:26] LAT : 36.864666 , LON : -74.485618 , DEPTH : 1619.2411 m, TEMP : 3.82726 C, SAL : 34.95175 PSU, DO : 8.34541 mg/l [14:27:31] @Bradley and @Mike Maybe the reverse countershading is to mask any bioluminescent prey that it is feeding on, kind of similar to the red stomachs of ctenophores? [14:27:45] To answer the crustacean eyes question - they can recover from sweeping beam, but longer term exposure irreparably destroys them [14:28:21] reverse countershading to blend into the light sediment on the bottom [14:28:37] @Scott I don't know many beings who would want to be naked in an aquarium. All those humans watching! [14:29:01] @Tamara Gotcha! [14:29:12] Tammy -- or perhaps the dark web and arms masks bioluminescence by prey [14:29:22] adamskarke leaves the room: Replaced by new connection [14:30:12] Mike - probably both - light top to reduce contrast with sediment, dark arms to mask bioluminescence [14:30:19] another 100 meters traveled - 200 total [14:31:01] Very chimaera filled dive today [14:32:26] LAT : 36.864977 , LON : -74.485508 , DEPTH : 1616.4156 m, TEMP : 3.8266 C, SAL : 34.95223 PSU, DO : 8.32678 mg/l [14:34:02] @adamskarke and @carolynruppel would you be interested in having us use the slurp sampler to suck up some of this bacterial mat at some point? [14:34:20] some lighter coloured chemosynthetic bacteria [14:35:31] what are all the lumps?....rocks? [14:35:34] @Amy--seriously am the wong person to ask! I'm a geophysicist...There may be others on who have a better answer for you [14:36:48] Seep ahead? [14:37:14] @Amy absolutely yes to the backteria slurp questions [14:37:26] LAT : 36.865051 , LON : -74.485526 , DEPTH : 1616.4294 m, TEMP : 3.83421 C, SAL : 34.95222 PSU, DO : 8.33094 mg/l [14:37:29] @carolynruppel — okay, general question for anyone? [14:37:44] Beautiful little pockets of mussels [14:37:57] B. childressi [14:38:48] @taraluke okay, we don't have a push core but I thought the slurp might be a reasonable alternative [14:38:54] Chiridota? [14:39:19] Yes! We saw them at the other Norfolk seep sites [14:39:35] Prob Chiridota large wheel ossicles visible [14:39:40] Chiridota (holothurian) [14:39:45] @Amy a slurp should be fine. The beauty of working with bacteria is that you don't need a lot. :) [14:40:18] Chiritoda heheva reported seeps and wooden wrecks [14:41:21] @Amy and @Tara If you use the slurp, you would lose the stratification of bacteria in the sediment. Each layer likely is entirely different. [14:41:58] @nolanbarrett but at the moment it is our only way to collect bacteria with this vehicle. [14:42:00] Ophs look like typical Ophiomusa [14:42:27] LAT : 36.865106 , LON : -74.485507 , DEPTH : 1616.1802 m, TEMP : 3.83024 C, SAL : 34.9505 PSU, DO : 8.30751 mg/l [14:43:28] @Alexis Very true, so its hard to decide. I'm definitely not a person to decide. I've only worked with marine bacteria in the context of looking at their secondary metabolites. [14:46:12] scottfrance leaves the room [14:47:06] lenticular carbonate [14:47:26] @Nolan true, but a non-stratified sample is better than no sample at all. We can still gain information that we wouldn't otherwise have. [14:47:28] LAT : 36.865082 , LON : -74.485378 , DEPTH : 1614.033 m, TEMP : 3.83211 C, SAL : 34.95171 PSU, DO : 8.28006 mg/l [14:50:00] mussle shells clean except for numerous old byssal attachments...no detritus dusting [14:50:13] @Tara Very true! I guess when the sample is brought up to the ship, mix it thoroughly so that all of the bacteria are heterogeneous and you will be more likely to get most of the bacteria, for metagenomic analyses that is. [14:50:30] @Nolan exactly what I had in mind [14:51:06] Question from twitter: Steam girl : What's with the fuzzies on the muscles? [14:51:49] Question from facebook: Diana Lindloff: Why are the lasers important? [14:52:19] @adamskarke doesn't that "valley" look like some of the big seep sites we saw at other sites (with active seeping)? [14:52:28] LAT : 36.865097 , LON : -74.485421 , DEPTH : 1615.6152 m, TEMP : 3.83013 C, SAL : 34.95173 PSU, DO : 8.12904 mg/l [14:52:31] some larger mussels here [14:53:13] williammowitt leaves the room [14:53:14] @Tara How do you think @WatchLeads should preserve it? Put directly into an Ocean Genome Legacy Tube or into Ethanol? [14:54:46] snap zoom on octopod? [14:55:10] Do the chimeras eat the mussels like rays do or do they feed on the critters hiding around the mussels? [14:55:34] Sorry was watching but occupied...Glad to see that we are on a more exciting place now! Vindication for the acoustics! [14:55:40] Question from Facebook: Amanda Hanger: is their such thing as female or male mussels ? [14:57:00] Most mussels have separate sexes and broadcast spawning, but some are hermaphrodutes. [14:57:13] adamskarke leaves the room [14:57:14] *hermaphrodites [14:57:28] LAT : 36.865512 , LON : -74.485754 , DEPTH : 1613.8162 m, TEMP : 3.83007 C, SAL : 34.95145 PSU, DO : 8.29842 mg/l [14:59:30] @ Nolan re chimera...no evidence from GoM studies that they eat mussels have been seen eating squat lobsters [15:00:48] @Bob Thank you! I was wondering just based on the position and orientation of their mouths. [15:01:09] @Nolan if the Ocean Genome Legacy tubes are designed to preserve DNA, that is probably fine (I don't know the details of these tubes) but ethanol is another option. [15:01:50] @Nolan I doubt that we are going to be looking at bacterial morphology [15:01:53] Keet-ag-nath [15:02:29] LAT : 36.86513 , LON : -74.485745 , DEPTH : 1614.3863 m, TEMP : 3.82957 C, SAL : 34.95291 PSU, DO : 8.26617 mg/l [15:02:46] large depression ahead [15:02:47] Cheato = bristles, gnath = jaws [15:02:53] @ Nolan, I do not remember anyone running isotopes on a chimera. Steve MacAvoy at UVA looked at lots of trapped associates and found them to be heavily dependent on photosynthetic carbon rather than seep [15:04:39] adriennecopeland leaves the room [15:04:51] Appendicularian snot house? Cool! [15:04:51] kaseycantwell leaves the room [15:05:30] bernardball leaves the room [15:05:55] ryangasbarro leaves the room [15:05:56] @Tara OGL works with OKEX as our genome sampling collaborator. For macroorganisms, we just put a snip of the tissue directly into vial with a buffer. There are separate ones for hard corals that contain beads to break up the skeleton. I don't remember what the buffer is. I think as long as the vial is noted to have microbes from sediment in it, I think that might work. [15:06:06] @Tara Maybe to both OGL and Ethanol? [15:06:51] @Nolan can't go wrong with both. [15:07:29] LAT : 36.865274 , LON : -74.486012 , DEPTH : 1613.6179 m, TEMP : 3.8266 C, SAL : 34.95201 PSU, DO : 8.2898 mg/l [15:08:25] @Bob Very interesting, thank you! So I wonder what they would be feeding on then. [15:08:41] @Tara Sounds good! [15:09:03] I think that these deeper seeps are not due to dissociation of hydrate. The geochemistry is different than the shallow biogenic methane seeps, and have more hydrocarbons than methane. These are probably from the utilization of deep hydrocarbons utilizing faults as pathways to teh surface. [15:09:30] very spiny! [15:10:35] the spines on this skate look curved, like rose thorns [15:10:59] @kelley We don't think they are due to dissociation of gas hydrate. The explanation we have published is that they are emitting microbial methane stored in very specific strata. I said nothing about these being due to the dissociation of hydrate. It is just that hydrate is the stable phase of methane plus water at these conditions. [15:11:04] @Tara They do! [15:11:49] Did we loose audio? [15:11:50] We have analyses from the gas from deep seeps on this margin and have not yet found any evidence for thermogenic gas. We have been working with BOEM on some of this and are funded by DOE for this work. Lots of people would like to find thermogenic gas, but so far there is none. [15:12:06] @Bob What about skates like this? Any evidence that they eat the mussels? [15:12:17] @Tara mine was silent for a minute or two [15:12:30] LAT : 36.865304 , LON : -74.486157 , DEPTH : 1614.6641 m, TEMP : 3.82957 C, SAL : 34.95156 PSU, DO : 8.26863 mg/l [15:12:32] sound is back now [15:12:36] Sorry, we just weren't talking for a minute [15:12:48] @Amy Gotcha thank you [15:12:51] 100 meters traveled - 300 meters [15:13:17] Any methane coming out at these water depths ought to be making hydrate. The reason it isn't is that the faults feeding this--we have ample new seismic data across 3 deep seep locations on the margin--are in a water-limited condition. So there isn't enough water to form hydrate as the methane migrates to the seafloor [15:13:18] @Amy no problem. Your voice needs a break too! I just didn't hear you or the pilots for a few minutes, which was unusual. :) [15:13:47] I don't expect to see Chaceon crabs at this depth but if you see anything that remotely resembles a crab please get a close-up to verify it. [15:14:14] @Carolyn, thats cool that you sampled the gas. So you only found methane? Have you all seen bathymodiolus beds associated with the shallow hydrate dissociation seeps? [15:14:38] @bradleystevens roger that [15:16:07] Phylogenetic status of spoon worms is problematic [15:17:30] LAT : 36.866331 , LON : -74.48636 , DEPTH : 1614.6385 m, TEMP : 3.82974 C, SAL : 34.95208 PSU, DO : 8.26421 mg/l [15:18:14] something metal? [15:18:31] metal drum [15:18:36] Flat urchin or sanddollar to the right of the metal? [15:19:13] lumps extremely abundant...biogenic? [15:20:53] adamskarke leaves the room [15:22:31] LAT : 36.865778 , LON : -74.486531 , DEPTH : 1610.0601 m, TEMP : 3.8299 C, SAL : 34.95187 PSU, DO : 8.26903 mg/l [15:23:10] Aldrovandia sp, because no scales on the snout [15:23:39] robertcarney leaves the room: Replaced by new connection [15:26:04] Awesome fish! [15:26:08] @taraluke if we do get a slurp of the bacterial mat, could you please email Alexis and me your recommendation for preservation/storage? I've seen some of the convo between you and @nolanbarrett but a lot going on in the control room today so want to make sure we get the proper preservation. [15:27:31] LAT : 36.865791 , LON : -74.486428 , DEPTH : 1610.6336 m, TEMP : 3.82897 C, SAL : 34.95204 PSU, DO : 8.25204 mg/l [15:28:01] Ken Sulak said this about Bathysaurus "classic sit-and-wait ambush predator. often nips off the tails of other large fishes. also eats a lot of midwater fishes that come down near the substrate. " [15:28:54] @CherylMorrison thank you! [15:28:59] Emily Narrows has a great children's educational video about these too! [15:29:20] @Amy I will do that. [15:32:32] LAT : 36.8658 , LON : -74.486309 , DEPTH : 1609.6726 m, TEMP : 3.83057 C, SAL : 34.9519 PSU, DO : 8.26511 mg/l [15:33:05] @Tara A note to include in the protocol for Amy and Alexis, if they need to wash with any water, use the water that came up in the slurp sample box. That way there won't be any microbes or DNA contamination from different water sources. [15:37:00] Alexis Weinnig leaves the room [15:37:07] burrow cast? [15:37:32] LAT : 36.865942 , LON : -74.486238 , DEPTH : 1608.2748 m, TEMP : 3.82831 C, SAL : 34.95215 PSU, DO : 8.25177 mg/l [15:37:43] johnreed leaves the room [15:39:10] laurenwalling leaves the room [15:40:28] mud ball bottom? quite atypical [15:41:40] cool pycnogonid [15:42:18] Pycnogonid question: Is this a definite female because of presence of the (I assume) ovigerous legs? [15:42:32] LAT : 36.865972 , LON : -74.486069 , DEPTH : 1607.0806 m, TEMP : 3.82753 C, SAL : 34.95179 PSU, DO : 8.25056 mg/l [15:42:35] That was a large pycno [15:42:41] @bob agreed- Very curious structure [15:42:43] Pycnogonids probably have more cumulative tissue biomass in the legs than in the body. Probably walks better than it thinks. [15:43:04] lol! [15:43:35] Amy Wagner leaves the room [15:43:46] a lot of people walk better than they think. [15:43:50] xenophyophore in front mus shell [15:47:33] LAT : 36.866118 , LON : -74.486093 , DEPTH : 1604.0078 m, TEMP : 3.82902 C, SAL : 34.95135 PSU, DO : 8.26336 mg/l [15:48:42] another 100 meters traveled - 400 m total [15:49:41] Intedge: Manufacturer of FoodService Equipment. Textiles, Smallwares, and much more. [15:52:33] LAT : 36.866329 , LON : -74.485973 , DEPTH : 1593.1348 m, TEMP : 3.82847 C, SAL : 34.95202 PSU, DO : 8.26841 mg/l [15:56:26] good eye for that large mussel! [15:57:25] franktamara leaves the room [15:57:34] At least 20cm long [15:57:35] LAT : 36.866362 , LON : -74.485766 , DEPTH : 1588.8674 m, TEMP : 3.83079 C, SAL : 34.95199 PSU, DO : 8.26888 mg/l [16:00:06] Alexis Weinnig leaves the room [16:01:09] santiagoherrera leaves the room [16:01:24] Great shots of the filamentous bacterial covering! [16:02:34] LAT : 36.866381 , LON : -74.485719 , DEPTH : 1588.0472 m, TEMP : 3.83277 C, SAL : 34.95137 PSU, DO : 8.31055 mg/l [16:03:48] Mapping question from the FAU Harbor Branch ECC: We heard the pilots talking about "Z-bias" - what is that? [16:06:09] @jimmasterson did you happen to catch what "Z-bias" they were talking about on the ROV side? Shannon says that could have many answers... [16:06:23] but she would by happy to answer if she can [16:06:39] adamskarke leaves the room [16:06:49] I did not, sorry. Think at may have had to do with exaggerating the vertical in the map [16:07:35] LAT : 36.866391 , LON : -74.485811 , DEPTH : 1587.3244 m, TEMP : 3.82919 C, SAL : 34.95207 PSU, DO : 8.27462 mg/l [16:08:44] anyone know if snails from on the surface of mussels were collected from this site before? [16:09:39] Thanks Shannon! [16:10:10] tilted carbonate slab [16:11:40] many fossil shells in these rocks...total accretion can be both shells and authigenic cement [16:11:56] meganmcculler leaves the room [16:12:35] LAT : 36.86656 , LON : -74.485671 , DEPTH : 1581.8557 m, TEMP : 3.82897 C, SAL : 34.9524 PSU, DO : 8.26954 mg/l [16:14:26] @bob...absolutely! [16:14:33] some slabs seem to be tilted up in a circular manner [16:14:58] @bob--yes, I've seen some things that make one think of pockmarks, but not going to say that on the audio line [16:15:08] Looking back to see whether we collected snails in the canyons project [16:17:36] LAT : 36.866678 , LON : -74.485732 , DEPTH : 1578.4904 m, TEMP : 3.8315 C, SAL : 34.95283 PSU, DO : 8.23032 mg/l [16:19:24] Haven't found anything suggesting that we collected snails at seeps in the Canyons project. Would be a great collection at some point! [16:19:42] bact mat growing above bottom...suggests high dissolved sulfide level above the sed interface [16:22:36] LAT : 36.86659 , LON : -74.485332 , DEPTH : 1574.5624 m, TEMP : 3.82803 C, SAL : 34.95202 PSU, DO : 8.24682 mg/l [16:27:37] LAT : 36.866619 , LON : -74.485211 , DEPTH : 1572.8448 m, TEMP : 3.82742 C, SAL : 34.95183 PSU, DO : 8.24197 mg/l [16:30:19] heckeri bent [16:30:54] Yes!!! [16:31:25] no mantle tissue [16:32:37] LAT : 36.866755 , LON : -74.485318 , DEPTH : 1570.1583 m, TEMP : 3.82786 C, SAL : 34.95193 PSU, DO : 8.20763 mg/l [16:33:37] iscwatch2 leaves the room [16:33:57] scottfrance leaves the room [16:34:46] Just saw the heckerae as I was exiting the train. [16:35:01] it was a dead one :( [16:36:40] I know, but still very promising. [16:36:55] @CherylMorrison just saw your earlier message about no snails from Canyons - thanks! Will keep an eye out [16:37:02] True @bernardball! [16:37:23] Antimora rostrata [16:37:37] Historical question Is this the same canyon where Barb Hecker first imaged a NW Atlantic seep mussel community? [16:37:39] LAT : 36.866562 , LON : -74.485179 , DEPTH : 1572.4986 m, TEMP : 3.82704 C, SAL : 34.95203 PSU, DO : 8.23812 mg/l [16:38:19] @bob....Hecker talked about Baltimore in her gray literature paper [16:38:39] @Bob That was the only seep site verified north of Hatteras prior to the work that started out here in 2012 [16:38:57] @bob Peter Rona looked for years for seeps in Hudson based on high CH4 in water column but never found the seeps [16:38:58] @ carolyn thanks, I get the canyons mixed up [16:39:19] @bob Hecker's gray lit pub is very hard to track down [16:40:32] It maybe on line as a scanned tech report to BLM [16:42:38] LAT : 36.866688 , LON : -74.48507 , DEPTH : 1572.311 m, TEMP : 3.8272 C, SAL : 34.95118 PSU, DO : 8.24 mg/l [16:43:28] kelleybrumley leaves the room [16:47:39] LAT : 36.866501 , LON : -74.484847 , DEPTH : 1575.7645 m, TEMP : 3.82726 C, SAL : 34.95194 PSU, DO : 8.25736 mg/l [16:50:01] @Alexis How much time left on bottom? [16:51:59] off bottom roughly 15:30 local [16:52:39] LAT : 36.866543 , LON : -74.484573 , DEPTH : 1579.6247 m, TEMP : 3.8272 C, SAL : 34.95185 PSU, DO : 8.25029 mg/l [16:52:57] @Alexis Thank you! [16:56:34] Polychaet [16:57:40] LAT : 36.866456 , LON : -74.484385 , DEPTH : 1585.5218 m, TEMP : 3.8293 C, SAL : 34.95207 PSU, DO : 8.25894 mg/l [16:58:05] kaseycantwell leaves the room [16:58:07] Amy Wagner leaves the room [16:58:20] the term meiofauna is typically reserved for benthic organisms < 0.5mm. Larger than that is infauna/eoifauna [16:58:28] *epifauna [16:58:35] another 100 meters traveled - 600 meters traveled [17:00:54] nolanbarrett leaves the room [17:01:46] definitely something pouring out of many of those holes [17:02:36] a hotbed of burrowing organisms [17:02:40] LAT : 36.866239 , LON : -74.484226 , DEPTH : 1583.6762 m, TEMP : 3.83007 C, SAL : 34.95217 PSU, DO : 8.25588 mg/l [17:02:50] we switched to seirious....do we think that thing to the right was bones? [17:02:54] if burrows a likely maker would be chemo lucinid clams...deep burrowers [17:03:18] adamskarke leaves the room [17:03:47] definitely crab parts [17:03:52] yep [17:03:53] Isn't that water flow? [17:04:00] williammowitt leaves the room [17:04:09] fluid [17:04:44] robertcarney leaves the room [17:04:57] Brine, perhaps? [17:05:07] Could we have another look at the crab shell, please? [17:06:39] @bradleystevens will try on the way out [17:07:41] LAT : 36.866273 , LON : -74.484253 , DEPTH : 1585.4759 m, TEMP : 3.82974 C, SAL : 34.95201 PSU, DO : 8.24666 mg/l [17:10:47] adjacent amd right of mud puffer is a patch of small fecal pellets... suggests bivalve to me all in all a curious mound [17:11:37] @bob--you've seen of lot of low hydrate mounds in GoMex and we also saw them on Cascadia margin last few weeks with Falkor cruise...this has that low rounded morphology, but obviously impossible to know what is down there [17:12:41] LAT : 36.866253 , LON : -74.484206 , DEPTH : 1585.0387 m, TEMP : 3.82979 C, SAL : 34.95209 PSU, DO : 8.23504 mg/l [17:12:56] @adam doesn't look like the measurements we have access to for T, salinity, DO really vary here...but definitely something of interest down the line [17:13:36] puffing mound surrounded by mud-ball bottom [17:17:42] LAT : 36.866252 , LON : -74.484255 , DEPTH : 1584.7338 m, TEMP : 3.8288 C, SAL : 34.95154 PSU, DO : 8.26152 mg/l [17:18:12] meganmcculler leaves the room [17:18:44] Truly incredible [17:19:08] Always think that I'm old and jaded and can't see anything new, and then we see something like this [17:19:26] can we look at the crab now? [17:19:55] @brad Thank you for letting us physics geeks get our fix! [17:19:59] not that the seep isn't cool... [17:20:13] Of course! [17:21:00] as I suspected, that is a king crab, Lithodes sp, not a Chaceon [17:21:53] Crazy that one single mussel would be inside the lithodid carapace! [17:21:55] Haven't seen any of those in the last few days, and surprised to see it here. They usually like rocky substrata. [17:22:42] LAT : 36.866283 , LON : -74.484178 , DEPTH : 1582.4413 m, TEMP : 3.83354 C, SAL : 34.95194 PSU, DO : 8.25686 mg/l [17:22:54] Looks like more of that same "brine" seepage as we came up the slope [17:23:52] @ Cheryl sometime when collecting crabs at GoM seeps juvenile mussels (~~ 2mm) would be found on spines and/or hairs. [17:24:04] Unfortunately, I have to leave, and I'm not sure I'll be back in time for the end of the dive. Just in case I don't make it back, thank you all for an outstanding expedition! [17:24:12] bradleystevens leaves the room [17:24:19] Thanks so much @taraluke! [17:24:37] @Tara thank you and talk to you later! [17:25:28] taraluke leaves the room [17:25:56] @Bob- interesting! Hadn't seen that, but you've looked at many more deep Gulf critters than I have! [17:27:43] LAT : 36.866319 , LON : -74.483902 , DEPTH : 1579.593 m, TEMP : 3.83194 C, SAL : 34.9522 PSU, DO : 8.25641 mg/l [17:27:45] Crab shell would not last long enough for a mussel to grow in it. More likely the crab shell is missing its dorsal side and drifted on top of the mussel. [17:29:57] @Bradley- okay, that makes more sense to me! [17:32:43] LAT : 36.866154 , LON : -74.483993 , DEPTH : 1579.1976 m, TEMP : 3.8299 C, SAL : 34.95173 PSU, DO : 8.26022 mg/l [17:34:12] Question from instagram: purple_poppy1 Have really enjoyed watching the dives and seeing and learning so much. May I ask...on the ideal dive, what is it you would like to see or sample, what you haven't already? Great commentary by the way! [17:34:13] meganmcculler leaves the room [17:35:07] I grabbed a frame of the crab shell. It looks like it might be a cast exoskeleton, i.e. somebody molted and left it behind. There should be a crab in a new suit wandering nearby. [17:36:16] Brisingid Seastars! [17:36:38] laurenwalling leaves the room [17:36:55] another Muusoctopus johnsonianus [17:37:09] I like to see something I've never seen before. Which is pretty much happening on every dive! [17:37:44] LAT : 36.86605 , LON : -74.483805 , DEPTH : 1579.5815 m, TEMP : 3.83123 C, SAL : 34.9522 PSU, DO : 8.27801 mg/l [17:39:17] As a veteran of multiple dives in Delta, Alvin, and Pisces, the most exciting part of the dive is when you first hit bottom because you never know what you will find. [17:39:39] Crab! [17:41:33] Could be a Chaceon but claws were funky. If so, it is the deepest record. [17:42:04] Did you just say that octopus was a-musing...? [17:42:14] Sorry. Getting punchy here in hurricane-land. [17:42:39] @Scott- how's it looking down your way? [17:42:44] LAT : 36.866039 , LON : -74.484115 , DEPTH : 1581.672 m, TEMP : 3.82913 C, SAL : 34.95201 PSU, DO : 8.24729 mg/l [17:43:45] Last update was better than the earlier one. It nudged the 15-20" of rain a bit to the east, so, all due respect to my eastern friends, I hope that trend continues! [17:44:44] King crab was probably Neolithodes sp, maybe grimaldii [17:45:27] @Cheryl: LUMCON could be in for a pretty serious pounding. [17:46:02] @scottfrance Haha! I love the puns! :) [17:46:07] @Scott- good for you, sorry for LUMCON! Hope everyone stays safe [17:46:22] Mussel shells leading up the slope [17:47:45] LAT : 36.866455 , LON : -74.483952 , DEPTH : 1574.2902 m, TEMP : 3.83024 C, SAL : 34.95273 PSU, DO : 8.23945 mg/l [17:48:33] @Cheryl: hopefully the worst will be the near heatstroke I suffered this morning clearing debris out of the coulee (that is a creek in Cajun land) behind my house! [17:49:21] @Scott - the lovely steamy hot before a hurricane rolls in…. [17:49:53] @Amy: weeks before in this case! Man it has been hot! [17:50:07] Possibly a Kophobelemnon or something like it... [17:50:20] adamskarke leaves the room [17:52:02] lucinid clam shell in burrow wall [17:52:45] LAT : 36.866509 , LON : -74.48381 , DEPTH : 1569.9754 m, TEMP : 3.83123 C, SAL : 34.95206 PSU, DO : 8.22342 mg/l [17:54:12] @bob Clams? No clams have been found north of Blake as far as I know. So would be something if it truly were a clam! [17:57:28] @ Carolyn the lucinids are a pretty ubiquitous group shallow to deep. They are not like the big Calyptogena-types which seep people are familiar with, [17:57:31] What is the significance of a geo feature like this? [17:57:46] LAT : 36.866785 , LON : -74.483961 , DEPTH : 1566.7062 m, TEMP : 3.82753 C, SAL : 34.95222 PSU, DO : 8.24616 mg/l [17:57:51] @bob THank you! I"m no biologist. so I appreciate the explanation [17:58:03] @nolan We aren't sure. Never seen this situation before. [17:58:32] @nolan As I said on the line, the other one had the rounded low morphology that we sometimes see with mantled gas hydrate mounds. [17:59:02] @Carolyn Thank you, I missed the last one. This is awesome that both Bio and Geo folks are seeing new things! [17:59:02] laurenwalling leaves the room [17:59:46] @nolan the small features were associated with that fluid flow activity at the previous place we saw these [18:00:18] another 100 meters traveled - 700 meters total [18:00:46] @Carolyn Gotcha, thank you [18:00:54] @nolan All we can really say about that is the flows were denser than the ocean water based on what we observed. Flows entrained sediment. Very odd [18:02:36] @Carolyn So definitely you are coming back to this site with more equipment? :) [18:02:46] LAT : 36.866791 , LON : -74.484064 , DEPTH : 1562.9832 m, TEMP : 3.82847 C, SAL : 34.952 PSU, DO : 8.24056 mg/l [18:02:59] Paper that was just referred to from Amanda Demopoulos is: [18:03:07] Demopoulos, A., J. McClain-Counts, J. Bourque, N. Prouty, B. Smith, S.D. Brooke, S. Ross, and C. Ruppel, 2019, Examination of Bathymodiolus childressi nutritional sources, isotopic niches, and food-web linkages at two seeps in the US Atlantic margin using stable isotope analysis and mixing models, Deep Sea Research I, 2019. [18:03:23] Thanks @carolynruppel! [18:03:27] curious patch grey old holes [18:03:43] sorry: With the DOI: Demopoulos, A.W.J., McClain-Counts, J.P., Bourque, J.R., Prouty, N.G., Smith, B.J., Brooke, S., Ross, S.W., Ruppel, C.D., 2019, Examination of Bathymodiolus childressi nutritional sources, isotopic niches, and food-web linkages at two seeps in the US Atlantic margin using stable isotope analysis and mixing models: Deep-Sea Research Part 1, v. 148, pp. 53–66, doi: 10.1016/j.dsr.2019.04.002. [18:04:06] michaelvecchione leaves the room [18:05:42] robertcarney leaves the room [18:06:19] I've made the comparison in a couple of blogs about how far we've come from the days where "in situ" deep-sea biology was diving in a submersible where the 2 observers (plus pilot) were effectively cut off from other scientists. With ROVs we then moved to collaboration among all on the ship who could get in front of a screen, to the current telepresence model. [18:07:27] a few xenophyophores amoung the little mud balls....a type of benthic foram [18:07:47] LAT : 36.86691 , LON : -74.484088 , DEPTH : 1563.5502 m, TEMP : 3.82853 C, SAL : 34.95205 PSU, DO : 8.23217 mg/l [18:08:29] xenophyophores are cool! [18:08:51] Xenophyophores ARE cool! [18:09:28] Some type of cable [18:09:53] running along the seafloor, starboard side [18:12:47] LAT : 36.866948 , LON : -74.484085 , DEPTH : 1561.4895 m, TEMP : 3.82902 C, SAL : 34.95216 PSU, DO : 8.24582 mg/l [18:17:30] Nooo idea other then hydroid [18:17:48] LAT : 36.867002 , LON : -74.484104 , DEPTH : 1560.503 m, TEMP : 3.8288 C, SAL : 34.95219 PSU, DO : 8.24373 mg/l [18:17:51] Maybe egg cases on the base??? [18:18:17] 🤷‍♀️ [18:20:07] D2=Deep Donuts [18:20:16] * deep donuts [18:22:13] I have to run now, but thanks all for the great dive today and for the entire Leg 2 expedition--some useful info for BOEM management needs. By the way, I passed on images of the unusual fluid and mounds to Bill Shedd at BOEM New Orleans. His first take was brine but he didn't have the live feed, just still images. [18:22:48] LAT : 36.867162 , LON : -74.484041 , DEPTH : 1553.0176 m, TEMP : 3.82979 C, SAL : 34.95164 PSU, DO : 8.24204 mg/l [18:22:50] mud balls - there is a polycheate that produces multiple ball-like mud tube.. too bad Lisa Levin isn't here [18:22:52] thanks @markmueller glad BOEM could join us on this expedition! [18:23:36] Ah ha a Scotoanass/Peniagone like holothuroid swimmer [18:24:50] @markmueller...Glad Bill agrees! [18:25:13] Holoturoid mud colored warty ventro-lat podia possibly a Mesothuria or Zygothuria [18:27:03] markmueller leaves the room [18:27:49] LAT : 36.867259 , LON : -74.483925 , DEPTH : 1549.3919 m, TEMP : 3.82974 C, SAL : 34.95204 PSU, DO : 8.24822 mg/l [18:32:10] Cool to see the octopus next to the xeno and to think about size of that single-celled organism. [18:32:49] LAT : 36.867456 , LON : -74.48412 , DEPTH : 1544.8864 m, TEMP : 3.8288 C, SAL : 34.95174 PSU, DO : 8.24643 mg/l [18:33:05] yes, another Muusoctopus johnsonianus [18:34:19] @Amy: Thnkas! :-) Love it. [18:34:28] reaching out to touch the alien machine [18:37:50] LAT : 36.86756 , LON : -74.483942 , DEPTH : 1539.7832 m, TEMP : 3.83073 C, SAL : 34.95223 PSU, DO : 8.2381 mg/l [18:37:54] another mud ball biogenic option cirratulid polychaete balls as reported off So Cal and Oman by L Levin ? [18:38:27] @Bob...so are they fecal mud balls or are they made in some other way [18:41:24] Cyclothone [18:41:47] adamskarke leaves the room [18:42:50] LAT : 36.867728 , LON : -74.483906 , DEPTH : 1536.7684 m, TEMP : 3.82974 C, SAL : 34.95194 PSU, DO : 8.22219 mg/l [18:43:20] adriennecopeland leaves the room [18:45:00] jasonchaytor leaves the room [18:47:50] LAT : 36.867884 , LON : -74.483805 , DEPTH : 1533.4076 m, TEMP : 3.8277 C, SAL : 34.95217 PSU, DO : 8.24989 mg/l [18:51:05] Stalk upper left? [18:51:13] large burrows tend to be in clusters of 2 of 3 around a central point, lighter color excavated material a short distance in front of the downward sloping hole [18:51:39] xenophyophore next to eel closeup [18:52:51] LAT : 36.868096 , LON : -74.483851 , DEPTH : 1531.1579 m, TEMP : 3.83134 C, SAL : 34.95234 PSU, DO : 8.25066 mg/l [18:53:06] A carolyn if biological I suspect they are an aggregate of mud, fecal mud, etc...or some how sedimentological..."cheeze curds" [18:56:58] holothuroid swimmer [18:57:51] LAT : 36.868274 , LON : -74.483798 , DEPTH : 1526.1088 m, TEMP : 3.83768 C, SAL : 34.95235 PSU, DO : 8.22372 mg/l [19:00:34] asteroid burried [19:00:58] Asteropectinidae [19:01:35] mud balls very shaggy...mucus + mud [19:02:52] LAT : 36.868454 , LON : -74.483584 , DEPTH : 1524.5049 m, TEMP : 3.83514 C, SAL : 34.95261 PSU, DO : 8.22592 mg/l [19:03:01] Have we tried suctioning one of these? I think it may be close to Kophobelemnon. [19:03:18] No we haven't. You think its worth a try? [19:03:24] The sea pen I mea. [19:03:45] I would love to see you try! Can't sample them with the manip because they are so small. [19:03:51] I think it is what we saw previous dive. we thought it might be Kophobelemnon. [19:04:22] @Amy: great! Thanks for giving it a try. [19:04:29] What is the signifiance if it is a Kophobelemnon? [19:05:33] That is not a taxon we have sampled before (because of their size). We've seen several of them on dive so would be good to actually determine what they are. Stand by and I'll check my database to see if I have ever collected any. [19:06:10] Okay, cool. I just wanted to be able to say a little something after we get it. [19:06:23] @Amy: yup, I understand. [19:07:40] I hate that I can't see suction collections on camera 1! [19:07:51] we have images with temp id of ?Kophobelemnon.sp during CAPSTON. [19:07:53] LAT : 36.868449 , LON : -74.48362 , DEPTH : 1525.0091 m, TEMP : 3.83691 C, SAL : 34.95233 PSU, DO : 8.23494 mg/l [19:07:58] Can't tell how deep the peduncle is. [19:08:22] @Asako: agreed. And we never collected any. [19:08:50] You may want to tell pilots it has an inflated base. [19:09:03] Well, at least we got sediment for microbes! [19:09:06] It looks to me as though the entire colony is still in place. [19:09:17]