[00:01:24] ah bugger [00:01:57] The illusion is worse when there's a lot of fine sediment that's settled around them! Been fooled by that more than once before [00:02:07] These are tricky areas to sample [00:02:24] LAT : 27.505386 , LON : -166.664761 , DEPTH : 4786.8165 m, TEMP : 1.5048 C, SAL : 34.68815 PSU, DO : 4.86578 mg/l, TURBIDITY : 0.6471 FTU [00:03:14] Thomas, yes! I sent Ashton a fairly detailed reply to his e-mail [00:03:39] A guide like that would be a real asset [00:05:08] Can't see any other good candidates in view [00:07:06] yes head at bottom. the probocis (mouthparts) are at the bottom center [00:07:24] LAT : 27.505183 , LON : -166.664538 , DEPTH : 4784.3788 m, TEMP : 1.61726 C, SAL : 34.65083 PSU, DO : 4.8316 mg/l, TURBIDITY : 0.7143 FTU [00:12:25] LAT : 27.505268 , LON : -166.665001 , DEPTH : 4781.1782 m, TEMP : 1.50655 C, SAL : 34.68751 PSU, DO : 4.85295 mg/l, TURBIDITY : 0.6471 FTU [00:12:34] Goniasterid for sure [00:17:25] LAT : 27.505409 , LON : -166.664714 , DEPTH : 4780.6598 m, TEMP : 1.5045 C, SAL : 34.68789 PSU, DO : 4.67119 mg/l, TURBIDITY : 0.6716 FTU [00:18:34] Its interesting to note the nearby feeding traces may be from this star indicating its a deposit feeder/grazer. I've been testing a new molecular method with Chris Mah to identify sea star prey from gut contents. Excited to see if I can apply it to this one. [00:18:57] thats cool [00:19:01] so cool!!!! [00:19:15] we've been getting good visuals of feeding traces along this dive [00:19:48] is this D02_06B? [00:20:01] D02_06B [00:20:04] yes! [00:20:23] Thanks! [00:21:31] corrected seatube info. [00:22:25] LAT : 27.50534 , LON : -166.664557 , DEPTH : 4766.9873 m, TEMP : 1.50432 C, SAL : 34.68808 PSU, DO : 4.60006 mg/l, TURBIDITY : 0.6532 FTU [00:23:22] Maybe talus, maybe stuck. May have to poke [00:23:27] Looks worth a try [00:23:48] Oh yes, I like this better than below [00:24:13] left and slightly below lasers [00:24:47] agreed [00:24:54] YES [00:25:32] GREAT work shoreside!!! [00:27:25] LAT : 27.505424 , LON : -166.664602 , DEPTH : 4767.6313 m, TEMP : 1.50258 C, SAL : 34.68783 PSU, DO : 4.73026 mg/l, TURBIDITY : 0.6471 FTU [00:28:29] Nice work, pilots!! [00:29:25] This is going to be pretty old rock, hard to say for sure what it is until it's on board [00:29:43] Roger - will stay sharp for more good sample candidates [00:31:17] plate's still moving! [00:32:26] LAT : 27.505639 , LON : -166.664424 , DEPTH : 4758.3583 m, TEMP : 1.51351 C, SAL : 34.68657 PSU, DO : 4.85457 mg/l, TURBIDITY : 0.6471 FTU [00:33:22] Awesome overview, Thomas [00:33:57] have to go. will try to keep watching via my phone! [00:34:02] Thank you all! [00:34:07] Later, Asako! [00:34:13] asakomatsumoto leaves the room [00:34:38] Thanks Val [00:35:36] samcuellar leaves the room [00:36:06] So there probably won't be a ton of rocks that can be sampled on this slope - it's fairly steep and everything in place will be crusted over. Once the slope flattens out again, chances of another sample will be better [00:36:09] Have there been any water samples taken yet? Since nothing here is "high density" I think there is still some value in sampling water for sequence detection [00:36:32] I take that back. Might be some stuff on the right side of the screen, just out of view [00:37:26] LAT : 27.505621 , LON : -166.664749 , DEPTH : 4756.344 m, TEMP : 1.5045 C, SAL : 34.68759 PSU, DO : 4.91246 mg/l, TURBIDITY : 0.6471 FTU [00:38:25] got a water sample when we first got to the bottom. Do you want another one here. [00:40:17] gotta feed the cats, back in a couple [00:40:20] This is Cladorhiza, a carnivorous sponge [00:40:33] There is an anemone underneath attached [00:41:21] agree with cladorhizid [00:42:27] asakomatsumoto leaves the room [00:42:27] LAT : 27.505681 , LON : -166.664546 , DEPTH : 4755.177 m, TEMP : 1.5018 C, SAL : 34.68726 PSU, DO : 4.78219 mg/l, TURBIDITY : 0.6471 FTU [00:42:46] This is very near to a species Les Watling and others described from the Aleutians [00:42:55] https://www.researchgate.net/figure/Cladorhiza-corona-sp-nov-A-In-situ-near-Amlia-Island-Alaska-1357-m-depth-showing_fig1_228628527 [00:47:28] LAT : 27.505592 , LON : -166.664719 , DEPTH : 4752.6646 m, TEMP : 1.50685 C, SAL : 34.68585 PSU, DO : 4.86496 mg/l, TURBIDITY : 0.6471 FTU [00:49:24] Agree, probably no loose rocks on a slope like this [00:52:28] LAT : 27.505668 , LON : -166.664621 , DEPTH : 4745.3505 m, TEMP : 1.50072 C, SAL : 34.68733 PSU, DO : 4.81274 mg/l, TURBIDITY : 0.6654 FTU [00:52:32] sponge base [00:52:36] samcuellar leaves the room [00:53:22] asakomatsumoto leaves the room [00:55:49] samcuellar leaves the room: Replaced by new connection [00:55:49] rocks in center of screen maybe? [00:55:56] now left side [00:57:12] yeah, just a zoom to look. most of them are probably stuck [00:57:28] LAT : 27.505713 , LON : -166.664697 , DEPTH : 4739.8356 m, TEMP : 1.50246 C, SAL : 34.68732 PSU, DO : 4.81642 mg/l, TURBIDITY : 0.6471 FTU [00:57:32] yeah, they're glued [00:58:20] that is a nice boulder [01:02:29] LAT : 27.505698 , LON : -166.664572 , DEPTH : 4734.9549 m, TEMP : 1.5015 C, SAL : 34.68711 PSU, DO : 4.75188 mg/l, TURBIDITY : 0.6532 FTU [01:02:46] samcuellar leaves the room [01:07:29] LAT : 27.505754 , LON : -166.664529 , DEPTH : 4733.4998 m, TEMP : 1.49964 C, SAL : 34.68714 PSU, DO : 4.84286 mg/l, TURBIDITY : 0.6593 FTU [01:09:24] sea cucumber, Elpidiidae [01:10:36] same family diff. species. [01:10:56] Nope. [01:11:06] collect? [01:11:15] Not a bad idea! [01:11:35] can you double up with the seastar [01:11:55] That said, we often don't get alot of time >4km so alot of what we see here is different [01:11:58] we have the flush jar left too [01:12:29] LAT : 27.505814 , LON : -166.664738 , DEPTH : 4733.0979 m, TEMP : 1.49886 C, SAL : 34.68775 PSU, DO : 4.78919 mg/l, TURBIDITY : 0.6654 FTU [01:13:20] asakomatsumoto leaves the room [01:17:30] LAT : 27.505822 , LON : -166.664536 , DEPTH : 4732.3898 m, TEMP : 1.49868 C, SAL : 34.68716 PSU, DO : 4.67587 mg/l, TURBIDITY : 0.6593 FTU [01:20:49] I have to log off for the evening but thank you, great dive, good visuals of the FZ wall, and hoping the perfect rock still appears for us! [01:21:15] have a good night [01:21:21] thanks so much Thomas! [01:21:27] Continuing sounds good [01:21:39] Maybe another water sample before leaving bottom would be a suggestion [01:21:45] chat-admin leaves the room [01:22:17] thomasmorrow leaves the room [01:22:30] LAT : 27.505828 , LON : -166.664488 , DEPTH : 4731.3967 m, TEMP : 1.50324 C, SAL : 34.68776 PSU, DO : 4.74494 mg/l, TURBIDITY : 0.6654 FTU [01:22:53] Another cladorhiza. This one is similar to one Nautilus collected near Johnston a few years ago [01:24:18] sounds good on the water sample [01:24:25] Actually not johnston, it was NA135 (PMNM) https://mczbase.mcz.harvard.edu/guid/MCZ:IZ:154358 [01:26:25] sarakahanamoku leaves the room [01:27:03] I have no clue what that thing on the back is. Nemertean maybe? [01:27:06] nemertean? [01:27:31] LAT : 27.505712 , LON : -166.664561 , DEPTH : 4730.2241 m, TEMP : 1.4985 C, SAL : 34.68715 PSU, DO : 4.90159 mg/l, TURBIDITY : 0.6593 FTU [01:29:41] christophermah leaves the room [01:30:30] sarakahanamoku leaves the room [01:32:31] LAT : 27.505952 , LON : -166.664789 , DEPTH : 4723.5795 m, TEMP : 1.49868 C, SAL : 34.68751 PSU, DO : 4.89751 mg/l, TURBIDITY : 0.6654 FTU [01:32:45] Collection request. Could it be grabbed? [01:33:16] We will try! [01:34:44] christophermah leaves the room [01:35:51] steven do you have a potential ID for the gastropod? [01:37:05] this looks different from the other one [01:37:32] LAT : 27.505893 , LON : -166.664751 , DEPTH : 4723.4779 m, TEMP : 1.49868 C, SAL : 34.68717 PSU, DO : 4.81583 mg/l, TURBIDITY : 0.6593 FTU [01:37:37] I don't have a good ID. Sorry. Gastropods are not my strength [01:37:53] the shell morphology looks relatively similar to me except I don't know if the previous gastro had that extension near the umbilical end [01:38:10] and no worries, I also don't know gastros - will put gastropod as the field ID and we can refine later [01:40:02] That said, there is a new postdoc fellow at NMNH that is doing work on deep-sea gastropods so we can update it when it arrives! [01:40:42] christophermah leaves the room [01:42:16] keep an eye here, might be some talus around [01:42:32] LAT : 27.505962 , LON : -166.66445 , DEPTH : 4720.581 m, TEMP : 1.49976 C, SAL : 34.68825 PSU, DO : 4.77872 mg/l, TURBIDITY : 0.6593 FTU [01:43:32] echiuran [01:43:53] possibly? [01:44:10] Acorn worm [01:44:56] fair point, i was off [01:46:38] Shallow species are usually infauna. Deeper acorn worms are surface deposit feeders. Their body is very fragile and gelatinous. But like some holothurians they just consume and defecate as they move [01:46:54] yes. Acorn womr [01:47:29] talus here [01:47:33] LAT : 27.50588 , LON : -166.664791 , DEPTH : 4717.7547 m, TEMP : 1.49892 C, SAL : 34.68785 PSU, DO : 4.83366 mg/l, TURBIDITY : 0.6654 FTU [01:48:25] yes, some candidates here! [01:48:42] that angular one looks promising [01:49:47] try the angular one, top left [01:50:30] sorry val no dice :( [01:50:37] Good dive. Thanks for the efforts. [01:50:40] bummer. thanks for trying! [01:50:56] EX2503_DIVE02 ROV Ascending [01:52:00] thanks! a good dive! [01:52:32] LAT : 27.505863 , LON : -166.664783 , DEPTH : 4708.7488 m, TEMP : 1.49628 C, SAL : 34.68704 PSU, DO : 4.93799 mg/l, TURBIDITY : 0.6593 FTU [01:52:55] thanks for the dive! hoping to be able to tune in more, kid-permitting [01:53:02] christophermah leaves the room [01:53:20] briankennedy leaves the room [01:54:25] kellymarkello leaves the room [01:55:03] samcuellar leaves the room [01:55:08] sarakahanamoku leaves the room [01:57:33] LAT : 27.505975 , LON : -166.665317 , DEPTH : 4589.9941 m, TEMP : 1.48504 C, SAL : 34.68749 PSU, DO : 4.73819 mg/l, TURBIDITY : 0.6593 FTU [01:58:11] stevenauscavitch leaves the room [02:02:34] LAT : 27.505842 , LON : -166.665404 , DEPTH : 4444.0304 m, TEMP : 1.46984 C, SAL : 34.68634 PSU, DO : 4.74064 mg/l, TURBIDITY : 0.6838 FTU [02:02:35] valfinlayson leaves the room [02:07:35] LAT : 27.505747 , LON : -166.665478 , DEPTH : 4291.2216 m, TEMP : 1.46467 C, SAL : 34.68512 PSU, DO : 4.77628 mg/l, TURBIDITY : 0.6777 FTU [02:12:35] LAT : 27.505667 , LON : -166.665448 , DEPTH : 4142.3071 m, TEMP : 1.45247 C, SAL : 34.68496 PSU, DO : 4.73345 mg/l, TURBIDITY : 0.6777 FTU [02:17:26] chat-admin leaves the room [02:17:36] LAT : 27.505721 , LON : -166.665449 , DEPTH : 3991.9629 m, TEMP : 1.44652 C, SAL : 34.68362 PSU, DO : 4.61404 mg/l, TURBIDITY : 0.6532 FTU [02:20:52] valfinlayson leaves the room [02:22:37] LAT : 27.505794 , LON : -166.665486 , DEPTH : 3839.7116 m, TEMP : 1.44255 C, SAL : 34.68189 PSU, DO : 4.5003 mg/l, TURBIDITY : 0.6593 FTU [02:27:38] LAT : 27.505626 , LON : -166.665473 , DEPTH : 3689.7885 m, TEMP : 1.44772 C, SAL : 34.6794 PSU, DO : 4.4383 mg/l, TURBIDITY : 0.6654 FTU [02:32:38] LAT : 27.505577 , LON : -166.665284 , DEPTH : 3538.709 m, TEMP : 1.45704 C, SAL : 34.67694 PSU, DO : 4.3732 mg/l, TURBIDITY : 0.6777 FTU [02:37:38] LAT : 27.505513 , LON : -166.665202 , DEPTH : 3385.5846 m, TEMP : 1.46215 C, SAL : 34.67541 PSU, DO : 4.30499 mg/l, TURBIDITY : 0.6716 FTU [02:42:39] LAT : 27.505352 , LON : -166.665216 , DEPTH : 3235.831 m, TEMP : 1.48943 C, SAL : 34.67 PSU, DO : 4.12993 mg/l, TURBIDITY : 0.6777 FTU [02:47:39] LAT : 27.505294 , LON : -166.665164 , DEPTH : 3082.4362 m, TEMP : 1.5045 C, SAL : 34.66685 PSU, DO : 4.04374 mg/l, TURBIDITY : 0.6777 FTU [02:52:39] LAT : 27.505435 , LON : -166.665209 , DEPTH : 2926.9524 m, TEMP : 1.54179 C, SAL : 34.66225 PSU, DO : 3.91757 mg/l, TURBIDITY : 0.6838 FTU [02:57:40] LAT : 27.505469 , LON : -166.665059 , DEPTH : 2771.0743 m, TEMP : 1.56898 C, SAL : 34.65769 PSU, DO : 3.66386 mg/l, TURBIDITY : 0.7204 FTU [03:02:40] LAT : 27.50533 , LON : -166.664839 , DEPTH : 2622.7195 m, TEMP : 1.61935 C, SAL : 34.65045 PSU, DO : 3.54625 mg/l, TURBIDITY : 0.6532 FTU [03:07:41] LAT : 27.505278 , LON : -166.664826 , DEPTH : 2475.6298 m, TEMP : 1.67143 C, SAL : 34.64267 PSU, DO : 3.32678 mg/l, TURBIDITY : 0.6471 FTU [03:12:42] LAT : 27.505361 , LON : -166.664804 , DEPTH : 2329.5122 m, TEMP : 1.72807 C, SAL : 34.63664 PSU, DO : 3.21216 mg/l, TURBIDITY : 0.6593 FTU [03:17:42] LAT : 27.505442 , LON : -166.664908 , DEPTH : 2184.4647 m, TEMP : 1.81849 C, SAL : 34.62513 PSU, DO : 3.03948 mg/l, TURBIDITY : 0.6654 FTU [03:22:42] LAT : 27.505591 , LON : -166.665012 , DEPTH : 2039.5382 m, TEMP : 1.94285 C, SAL : 34.61202 PSU, DO : 2.76172 mg/l, TURBIDITY : 0.6593 FTU [03:27:43] LAT : 27.50548 , LON : -166.664926 , DEPTH : 1889.4433 m, TEMP : 2.0678 C, SAL : 34.59971 PSU, DO : 2.55197 mg/l, TURBIDITY : 0.6593 FTU [03:32:43] LAT : 27.505467 , LON : -166.664907 , DEPTH : 1746.177 m, TEMP : 2.25823 C, SAL : 34.58045 PSU, DO : 2.31884 mg/l, TURBIDITY : 0.6654 FTU [03:37:44] LAT : 27.50551 , LON : -166.66492 , DEPTH : 1597.3504 m, TEMP : 2.47707 C, SAL : 34.55949 PSU, DO : 2.1088 mg/l, TURBIDITY : 0.6593 FTU [03:42:45] LAT : 27.505872 , LON : -166.664916 , DEPTH : 1446.5787 m, TEMP : 2.74169 C, SAL : 34.54085 PSU, DO : 1.93891 mg/l, TURBIDITY : 0.6654 FTU [03:47:46] LAT : 27.505877 , LON : -166.664891 , DEPTH : 1292.3123 m, TEMP : 3.06466 C, SAL : 34.50451 PSU, DO : 1.65509 mg/l, TURBIDITY : 0.6654 FTU [03:52:46] LAT : 27.50581 , LON : -166.66486 , DEPTH : 1148.5188 m, TEMP : 3.37497 C, SAL : 34.46339 PSU, DO : 1.38874 mg/l, TURBIDITY : 0.0 FTU [03:57:47] LAT : 27.50555 , LON : -166.664903 , DEPTH : 997.3921 m, TEMP : 3.76444 C, SAL : 34.3992 PSU, DO : 1.11003 mg/l, TURBIDITY : 0.6716 FTU [04:02:47] LAT : 27.505567 , LON : -166.664758 , DEPTH : 843.4093 m, TEMP : 4.25234 C, SAL : 34.28341 PSU, DO : 0.91683 mg/l, TURBIDITY : 0.6777 FTU [04:07:48] LAT : 27.505378 , LON : -166.664143 , DEPTH : 690.3019 m, TEMP : 5.08368 C, SAL : 34.11229 PSU, DO : 1.59446 mg/l, TURBIDITY : 0.6838 FTU [04:12:48] LAT : 27.505038 , LON : -166.663012 , DEPTH : 536.8465 m, TEMP : 6.92769 C, SAL : 34.0105 PSU, DO : 3.89686 mg/l, TURBIDITY : 0.6838 FTU [04:17:48] LAT : 27.504514 , LON : -166.661828 , DEPTH : 381.5355 m, TEMP : 10.36358 C, SAL : 34.14514 PSU, DO : 6.20246 mg/l, TURBIDITY : 0.6716 FTU [04:18:31] briankennedy leaves the room [04:22:48] LAT : 27.503824 , LON : -166.660392 , DEPTH : 232.3021 m, TEMP : 14.47082 C, SAL : 34.43454 PSU, DO : 6.66529 mg/l, TURBIDITY : 0.6654 FTU [04:27:49] LAT : 27.503047 , LON : -166.659099 , DEPTH : 82.5985 m, TEMP : 20.98203 C, SAL : 35.19937 PSU, DO : 7.26686 mg/l, TURBIDITY : 0.6777 FTU [04:32:50] LAT : 27.502165 , LON : -166.657188 , DEPTH : 16.7737 m, TEMP : 21.5003 C, SAL : 35.2 PSU, DO : 7.25248 mg/l, TURBIDITY : 0.6838 FTU [04:33:37] EX2503_DIVE02 ROV on Surface [04:49:31] EX2503_DIVE02 ROV Recovery Complete [11:48:03] stevenauscavitch leaves the room [17:21:27] EX2503_DIVE03 ROV powered off [17:27:24] EX2503 DIVE03 Test message [17:34:58] chat-admin leaves the room [17:43:24] EX2503_DIVE03 ROV powered off [18:15:13] EX2503_DIVE03 ROV Launch [18:21:07] EX2503_DIVE03 ROV on Surface [18:21:58] EX2503_DIVE03 ROV Descending [18:23:34] LAT : 26.876813 , LON : -168.1 , DEPTH : 26.4708 m, TEMP : 21.33403 C, SAL : 35.14321 PSU, DO : 7.28389 mg/l, TURBIDITY : 0.6288 FTU [18:25:59] chat-admin leaves the room [18:28:35] LAT : 26.877227 , LON : -168.099707 , DEPTH : 97.4606 m, TEMP : 19.51482 C, SAL : 34.97436 PSU, DO : 7.30503 mg/l, TURBIDITY : 0.6838 FTU [18:28:57] chat-admin leaves the room [18:33:35] LAT : 26.877298 , LON : -168.098305 , DEPTH : 241.7217 m, TEMP : 15.0679 C, SAL : 34.51188 PSU, DO : 6.67021 mg/l, TURBIDITY : 0.6654 FTU [18:37:13] valfinlayson leaves the room: Replaced by new connection [18:38:15] valfinlayson leaves the room [18:38:35] LAT : 26.87726 , LON : -168.097042 , DEPTH : 403.5777 m, TEMP : 9.99242 C, SAL : 34.14032 PSU, DO : 6.04766 mg/l, TURBIDITY : 0.6716 FTU [18:43:36] LAT : 26.87723 , LON : -168.096962 , DEPTH : 550.0828 m, TEMP : 7.54434 C, SAL : 34.04046 PSU, DO : 4.54113 mg/l, TURBIDITY : 0.6654 FTU [18:44:23] briankennedy leaves the room [18:44:39] chat-admin leaves the room [18:45:34] Good morning! We will start our dive planning call for Dive 04 shortly. [18:47:33] sarakahanamoku leaves the room [18:48:36] LAT : 26.877273 , LON : -168.09672 , DEPTH : 696.4243 m, TEMP : 5.27528 C, SAL : 34.10994 PSU, DO : 2.06159 mg/l, TURBIDITY : 0.6654 FTU [18:53:37] LAT : 26.877252 , LON : -168.096921 , DEPTH : 844.1505 m, TEMP : 4.30333 C, SAL : 34.25165 PSU, DO : 1.1206 mg/l, TURBIDITY : 0.6593 FTU [18:58:37] LAT : 26.877263 , LON : -168.096926 , DEPTH : 1000.6604 m, TEMP : 3.91905 C, SAL : 34.35396 PSU, DO : 1.05098 mg/l, TURBIDITY : 0.6838 FTU [19:03:38] LAT : 26.877745 , LON : -168.096766 , DEPTH : 1103.1738 m, TEMP : 3.5211 C, SAL : 34.43498 PSU, DO : 1.34077 mg/l, TURBIDITY : 0.696 FTU [19:06:17] EX2503_DIVE03 ROV on Bottom [19:08:29] chat-admin leaves the room [19:08:38] LAT : 26.877808 , LON : -168.096832 , DEPTH : 1116.3094 m, TEMP : 3.48223 C, SAL : 34.44343 PSU, DO : 1.34946 mg/l, TURBIDITY : 0.6593 FTU [19:13:39] LAT : 26.877885 , LON : -168.09684 , DEPTH : 1115.4774 m, TEMP : 3.48397 C, SAL : 34.44277 PSU, DO : 1.36878 mg/l, TURBIDITY : 0.6654 FTU [19:14:20] this is an undescribed stalked crinoid [19:14:33] From Tunnicliffe et al years ago [19:14:41] Can we collect? [19:14:47] no [19:15:10] give me a moment to find it [19:15:18] sure on the collect [19:15:36] what should be use for the field ID [19:16:47] christophermah leaves the room [19:17:17] okay.. an undescribed phrynocrinidae [19:17:26] from Palau [19:17:53] okay yes. a new Phrynocrinus [19:18:12] seen in Palau recently https://x.com/TUExplorer1/status/1851621583174987853 [19:18:28] can we get the stalk as well? [19:18:37] at least the lower part> [19:18:41] LAT : 26.877891 , LON : -168.096849 , DEPTH : 1115.8243 m, TEMP : 3.52511 C, SAL : 34.43767 PSU, DO : 1.31423 mg/l, TURBIDITY : 0.6654 FTU [19:19:03] sarakahanamoku leaves the room [19:19:50] Yes to rock collection, thanks! [19:20:09] can we get the rock AND the stalk? [19:21:38] Looks great [19:22:01] Bonus bio sample [19:22:13] Hello all! [19:22:29] Hi, Asako! [19:22:44] christophermah leaves the room [19:23:40] LAT : 26.87789 , LON : -168.096843 , DEPTH : 1113.6392 m, TEMP : 3.52372 C, SAL : 34.43429 PSU, DO : 1.32583 mg/l, TURBIDITY : 0.6654 FTU [19:23:45] Hi Val! [19:23:52] thank you! \ [19:24:43] if you can't get the stalk.. can we get a video profile ? [19:26:55] Roland said something about a sea star? [19:27:30] likely a brittle star.. but we'll see. would be nice if we snared Astrophiura.. an oph that looks like a sea star [19:27:34] very tiny [19:28:36] thanks Brian! [19:28:41] LAT : 26.877837 , LON : -168.096822 , DEPTH : 1113.4162 m, TEMP : 3.51499 C, SAL : 34.43833 PSU, DO : 1.32911 mg/l, TURBIDITY : 0.696 FTU [19:30:11] yes.. a comatulid. [19:31:12] Did Sara have questions about the crinoid parts? [19:32:19] a moment [19:33:42] LAT : 26.877865 , LON : -168.096858 , DEPTH : 1114.7468 m, TEMP : 3.53209 C, SAL : 34.43024 PSU, DO : 1.31709 mg/l, TURBIDITY : 0.6716 FTU [19:33:52] christophermah leaves the room [19:38:42] LAT : 26.877829 , LON : -168.09686 , DEPTH : 1112.3174 m, TEMP : 3.56646 C, SAL : 34.42919 PSU, DO : 1.28718 mg/l, TURBIDITY : 0.6716 FTU [19:39:47] Corallidae [19:42:10] thank you for the iD atsuko! [19:42:36] cup coral and Narella? [19:42:58] and Paracalyptrophora? [19:43:43] LAT : 26.877775 , LON : -168.096767 , DEPTH : 1112.5401 m, TEMP : 3.55861 C, SAL : 34.43134 PSU, DO : 1.286 mg/l, TURBIDITY : 0.6654 FTU [19:45:01] could be Paracalyptrophora from my view [19:47:12] CHRIS thank you SO much for the amazing crinoid info!!! [19:47:15] I am so stoked! [19:47:37] its an echinothuriid [19:47:44] haen't a blessed clue which one though [19:48:17] could be taking advantage of the cup or the poop/ [19:48:44] LAT : 26.878004 , LON : -168.096979 , DEPTH : 1109.6221 m, TEMP : 3.58419 C, SAL : 34.42532 PSU, DO : 1.30349 mg/l, TURBIDITY : 0.6654 FTU [19:49:04] resting on the surface [19:50:36] ooo! euplctellid with a shrimp! [19:52:44] christophermah leaves the room [19:53:34] it is literally a field of crinoids that have never been seen before! [19:53:44] LAT : 26.877876 , LON : -168.097065 , DEPTH : 1107.381 m, TEMP : 3.58256 C, SAL : 34.42749 PSU, DO : 1.25395 mg/l, TURBIDITY : 0.6654 FTU [19:57:53] Asthenactis [19:58:07] a myxasterid star.. at one time very rare. live only at these depths [19:58:45] LAT : 26.877846 , LON : -168.097134 , DEPTH : 1106.2348 m, TEMP : 3.57948 C, SAL : 34.42742 PSU, DO : 1.28954 mg/l, TURBIDITY : 0.6654 FTU [20:00:53] christophermah leaves the room [20:01:42] Just got on. That's a lot of stalked crinoids, possibly the same as what we used to call Phrynocrinidae n gen n sp [20:02:26] Hello Chris! [20:02:30] Hemicorallium sp [20:02:36] Hi Asako! [20:03:00] christophermah leaves the room [20:03:07] good morning chris kelley! we sampled one of the crinoids and are [20:03:16] getting awsome images of a crinoid field [20:03:46] LAT : 26.87805 , LON : -168.097155 , DEPTH : 1101.8769 m, TEMP : 3.60749 C, SAL : 34.42731 PSU, DO : 1.26696 mg/l, TURBIDITY : 0.6593 FTU [20:04:08] Great Sara. Just don't know if anyone has updated the name on that crinoid [20:04:48] Phelliactis sp is the hormathiid anemone. [20:05:12] Solanderia sp I think [20:05:20] It's a hydroan [20:05:23] Chris.. still undescribed phrynocrinid [20:05:35] but now we have collected one! and the French will be able to describe it! [20:05:52] No, I am wrong!!!! Brian is right black coral [20:06:38] Yep, sorry for initial mis-ID [20:07:01] chat-admin leaves the room [20:07:02] Asako, is Tina watching? [20:07:40] no need apologize for mis-ID when doing it on the fly!! [20:07:42] not yet. [20:08:04] Chris, I just sent a shot to her [20:08:09] valfinlayson leaves the room [20:08:46] LAT : 26.878136 , LON : -168.097083 , DEPTH : 1101.3232 m, TEMP : 3.58465 C, SAL : 34.42733 PSU, DO : 1.28765 mg/l, TURBIDITY : 0.6654 FTU [20:08:55] samcuellar leaves the room [20:11:23] I loves me some good ophiacanthids! [20:11:34] This almost looks like dike rock. Definitely basalt [20:12:39] hi. Tina suggests to collect that black coral! [20:12:43] sarakahanamoku leaves the room [20:12:50] The primnoid coral is Calyptrophora wyvillei I think [20:13:47] LAT : 26.878199 , LON : -168.09729 , DEPTH : 1092.0188 m, TEMP : 3.60127 C, SAL : 34.4241 PSU, DO : 1.272 mg/l, TURBIDITY : 0.6593 FTU [20:13:52] Aspidodiadema [20:14:32] anal bulb! [20:15:15] similar to shallow diadema like urchins. the sac fills with poop and releases when ready [20:15:28] the spines have pads they use to walk with.. [20:16:25] valfinlayson leaves the room [20:16:50] That white coral that you close upped may also be a Stylasteridae [20:17:11] that would have been very big for a Stylasteridae [20:17:55] If it is a coralliid, then it is a Pleurocorallium porcellanum [20:18:01] A feature I wrote about walking spines in urchins.. esp. Aspidodiadematids https://echinoblog.blogspot.com/2016/03/echinoderms-with-spines-for-walkin.html [20:18:34] This is a had coral [20:18:39] Tina: may be Lillipathes .. or Trissopathes - wrong side [20:18:47] LAT : 26.878282 , LON : -168.097343 , DEPTH : 1088.6763 m, TEMP : 3.61196 C, SAL : 34.42168 PSU, DO : 1.25878 mg/l, TURBIDITY : 0.6593 FTU [20:18:49] the id for the black coral. [20:20:13] I'm not complaining about that, haha [20:20:18] christophermah leaves the room [20:20:24] This white coral was different than the previous one. That last one was Enallopsammia rostrata. The deeper morph of that species typically is white, whereas the shallower morph is yellow [20:20:47] I mean, the white coral you last imaged was E. rostrata [20:20:51] collect this? [20:20:52] I'll put money on Tritonia sp. [20:21:30] I lost money to you already Chris down in Am Samoa. I'm not betting with you anymore. [20:21:48] ha ha. [20:22:04] Yes [20:22:50] sarakahanamoku leaves the room [20:23:48] LAT : 26.878317 , LON : -168.097306 , DEPTH : 1086.7861 m, TEMP : 3.62009 C, SAL : 34.41934 PSU, DO : 1.28008 mg/l, TURBIDITY : 0.6654 FTU [20:24:59] I would suggest you take a small piece of its tissue in 95% alcohol for genetics then put most of it in 10% formalin. [20:25:13] thank you, will let the SDMs know [20:25:44] christophermah leaves the room [20:26:53] Any chance you can look at the weird sponge to the upper right of the nudibranch? [20:27:12] I mean straight up now [20:28:20] just an fyi.. that little white star collected yesterday is a species in the genus Ahuastra which I only described last year.. looks new but we shall see! [20:28:48] incredible!!!!!! thank you chris!!! [20:28:49] LAT : 26.878334 , LON : -168.097329 , DEPTH : 1088.6977 m, TEMP : 3.60865 C, SAL : 34.42194 PSU, DO : 1.27148 mg/l, TURBIDITY : 0.6593 FTU [20:29:42] I think this is a pearl fish, Pyrodon or something like that. Got to check the guide [20:31:46] This is Atlantisella sp which is a euplectellid [20:31:51] samcuellar leaves the room [20:32:42] That fish was most likely Pyramodon ventralis, a deepwater pearlfish [20:32:58] This is Enallopsammia rostrata [20:33:48] LAT : 26.878291 , LON : -168.097253 , DEPTH : 1086.9673 m, TEMP : 3.61707 C, SAL : 34.42173 PSU, DO : 1.26222 mg/l, TURBIDITY : 0.6654 FTU [20:34:44] christophermah leaves the room [20:35:25] caprellids aren't they? [20:35:32] aka "skeleton shrimp" [20:35:41] agree caprellids [20:36:14] yes.. they ARE amphipods.. caprellids are a kind of amphipod [20:36:36] sorry.. I don't think any of the amphipods were xenomorph inspirations.. [20:36:40] lol well we managed to correct that in the end [20:36:50] sorry I'm horrible with anything non-foram [20:37:26] stollonipheran [20:37:29] no worries. your enthusiasm is welcome.! FAR better than my jaded "OH its just caprellids..:-) [20:37:33] Spelled it wrong [20:37:40] stoloniferans [20:38:49] LAT : 26.87832 , LON : -168.097333 , DEPTH : 1086.7312 m, TEMP : 3.57105 C, SAL : 34.42845 PSU, DO : 1.28159 mg/l, TURBIDITY : 0.6593 FTU [20:40:36] Geologist chiming in - we've seen stollonipheran corals on some other dives at ~~1700m in PMNM, and these look quite different than what I remember. Those were more opaque white than these, and tended to form more linear colonies. Is this typical of a shallower species? [20:40:53] christophermah leaves the room [20:41:10] ^The morphology we just saw, compared to the others I've seen [20:42:25] Val. there are so many colour variation for the stoloniferan. but impossible to identify with video. [20:42:48] Gotcha. thanks Asako! [20:42:58] hard to collect and hard to identify. [20:43:13] I remember them being hard to collect, yes! [20:43:16] especially after the revision by genetics... [20:43:37] Notice that the crusting on these rocks isn't batryoidal. Maybe these rocks fragmented not too long ago, maybe on a few million years instead of 80 MA [20:43:49] LAT : 26.878305 , LON : -168.097377 , DEPTH : 1084.8562 m, TEMP : 3.57611 C, SAL : 34.42954 PSU, DO : 1.26003 mg/l, TURBIDITY : 0.6593 FTU [20:43:56] christophermah leaves the room [20:44:46] Chris, this looks like intrusive rock, so this has to be exposed volcanic plumbing here. Lots of good columnar jointing too, which you noted earlier. [20:44:50] Atlantisella again [20:45:27] Agreed that this was exposed long after emplacement - some sort of faulting or collapse [20:45:42] So Val, how long do you think they have been exposed? [20:45:54] Centrocyllium sp [20:46:17] Well, maybe not [20:46:55] No idea! The FeMn crusts look thin here, so it depends on the ambient FeMn precipitation rates around here. I'm not sure how well that's quantified. At least a few million years [20:47:33] I think the shark could have been Apristurus sp instead. Longer snout and appearance of 3 anal fins [20:47:49] Vase sponge is Dictyaulus sp [20:47:53] There are ways to determine exposure ages at the surface or in space with some isotope systems, but unfortunately those don't work in submarine environments [20:48:29] Val, Andrea dated these seamounts to 83 MA which is why I was asking. [20:48:44] christophermah leaves the room [20:48:49] LAT : 26.87837 , LON : -168.097395 , DEPTH : 1082.3774 m, TEMP : 3.6015 C, SAL : 34.42467 PSU, DO : 1.30374 mg/l, TURBIDITY : 0.6654 FTU [20:50:44] Right, yes! We're pretty stoked about that paper. : ) It might be possible to do a rough estimate by comparing FeMn crustal thickness on these rocks compared to rocks that have has 83 Myr of FeMn precipitation. I'm not totally sure what that looks like in this area. I don't think it's as extreme as in the West Pacific though [20:51:05] christophermah leaves the room [20:51:06] Could even be a tens of million of years ago if the crusts are growing super slowly around here [20:51:23] Very interesting, thanks Val [20:51:39] No prob, Chris! Sorry I can't give you a more definite answer. I want to know too [20:53:36] valfinlayson leaves the room [20:53:48] ha ha Sara! poop is a great topic in Echinoderm biology! [20:53:51] LAT : 26.878527 , LON : -168.097361 , DEPTH : 1079.7356 m, TEMP : 3.61121 C, SAL : 34.42203 PSU, DO : 1.28003 mg/l, TURBIDITY : 0.6654 FTU [20:54:55] Argh, grammar fail over here, sorry. Also dealing with a fussy cat. Think he's hungry [20:55:02] hexactinellid but too small to go further [20:56:21] Regadrella sp I think [20:57:28] The mesh on top is called a sieve plate. It's characteristic of this genus of euplectellid. [20:58:17] Different species but same genus Brian [20:58:32] Chrysogorgia geniculata [20:58:46] christophermah leaves the room [20:58:50] LAT : 26.87859 , LON : -168.097521 , DEPTH : 1077.8682 m, TEMP : 3.61696 C, SAL : 34.42194 PSU, DO : 1.27655 mg/l, TURBIDITY : 0.6654 FTU [20:59:18] take the species name with a grain of salt. These are very complex to identify to species [20:59:36] hahaha k will stick to genus :-) [21:00:23] We used to call all the bottlebrush forms as C. geniculata but it turns out that there are a bunch that have that morphology. [21:00:45] christophermah leaves the room [21:00:47] bamboo [21:01:37] Lepidisis sp. Look at how long the tentacular spines are! [21:02:39] Sara, an interesting story about these seamounts: For a long time, these were considered "North Arch" volcanoes related to the Hawaiian hotspot, because they form a chain parallel to the Northwest Hawaiian Ridge. But the new ages and compositions that some colleagues have recently produced tell us that these volcanoes were active long before this part of the seafloor moved over the Hawaiian hotspot! [21:02:44] chris mah thoughts on this crinoid? same or different? [21:02:54] thank you val I can share that!!! super appreciate you! [21:03:25] this is definitely the same phrynocrinid [21:03:27] At 83 Ma, these would've preceded Hawai'i by ~~60 Myr, if I have my math right [21:03:33] Yes, feel free to share! [21:03:34] awesome thanks Chris Mah! [21:03:44] but lets see the pair [21:03:50] LAT : 26.878518 , LON : -168.097435 , DEPTH : 1077.9441 m, TEMP : 3.60296 C, SAL : 34.42354 PSU, DO : 1.2546 mg/l, TURBIDITY : 0.6716 FTU [21:04:45] we found a ceramaster or Bathyceramaster on a stalked crinoiod in 1706.. we weren't sure it ate the "head" or not [21:05:40] Val, if I remember correctly, nearby Gardner is around 15-17 MA but I could be misremembering. Got to go for a few minutes. I'll be back. [21:05:58] Chris, I was always surprised that you could identify Chrysogorgia species. I always say Chrysogorgia sp. [21:07:14] indeed sea stars would take a LOONG time to eat [21:07:44] Chris, that's about right. I keep thinking it's closer to 20 Ma for some reason. So the age offset is ~~70 Myr then! [21:07:54] the anal tube is in there somewhere [21:08:00] I work on too many old rocks, clearly [21:08:35] oh man.. that stalk is SO awesome! [21:08:50] LAT : 26.878515 , LON : -168.097513 , DEPTH : 1077.2638 m, TEMP : 3.59122 C, SAL : 34.42531 PSU, DO : 1.28034 mg/l, TURBIDITY : 0.6593 FTU [21:09:04] sarakahanamoku leaves the room [21:09:05] ha ha.. the ossicles from crinoids here.. from 1077 m to roadcuts in the midwest.. [21:09:18] my PhD was from Illinois in Paleo.. so this is like old home wek [21:09:44] omg are you serious!!! Amazing!! [21:10:01] Some crinoids are attacked and predated on by cidaroid urchins..but not seeing any here [21:10:35] oh wow. this will be food of the gods for some of my colleagues! so much great video! [21:12:31] is there much current here? [21:12:40] could the head have been taken away? [21:13:51] an echinothuriid [21:13:53] LAT : 26.87872 , LON : -168.097577 , DEPTH : 1077.5163 m, TEMP : 3.59436 C, SAL : 34.42324 PSU, DO : 1.2704 mg/l, TURBIDITY : 0.6654 FTU [21:14:17] ha ha.. you don't want these to be in your hand [21:15:03] those are related to shallow fire urchins [21:15:32] oh god not the fire urchins [21:15:36] h interesting.. smaller spines than the others [21:16:46] stevenauscavitch leaves the room [21:17:48] christophermah leaves the room [21:18:52] LAT : 26.878733 , LON : -168.0977 , DEPTH : 1069.1549 m, TEMP : 3.59261 C, SAL : 34.42441 PSU, DO : 1.27777 mg/l, TURBIDITY : 0.6593 FTU [21:19:11] another Chrysogorgia [21:19:15] samcuellar leaves the room [21:21:47] christophermah leaves the room [21:21:57] The sea pen is Anthoptilum sp., one of the "rock pens" [21:23:43] Hi Steve! [21:23:53] LAT : 26.878675 , LON : -168.097789 , DEPTH : 1069.369 m, TEMP : 3.59599 C, SAL : 34.42293 PSU, DO : 1.24357 mg/l, TURBIDITY : 0.6654 FTU [21:24:16] There is fantastic study by a former Phd student, Upasana Ganguly and Scott France on their distribution based on Okeanos video and specimens. https://mapress.com/zt/article/view/zootaxa.5507.1.5 [21:24:32] that is a feather star [21:24:38] Atelicrinus conifer [21:25:57] Sorry, not that species. I could swear I saw long unbranched ends to the arms but now I don't so its just a commatulid crinoid [21:26:50] hydrozoan [21:27:35] oh neat! A hydroid! [21:28:54] LAT : 26.878813 , LON : -168.097718 , DEPTH : 1066.4357 m, TEMP : 3.61086 C, SAL : 34.42008 PSU, DO : 1.27217 mg/l, TURBIDITY : 0.6716 FTU [21:28:56] Phelliactis sp its a hormathiid or venus fly trap anemone [21:29:12] christophermah leaves the room [21:30:33] Ah boy. I am so rusty. This is a hormathiid but its now considered to be in the genus Hormathia [21:33:55] LAT : 26.878816 , LON : -168.097796 , DEPTH : 1061.0108 m, TEMP : 3.67264 C, SAL : 34.41188 PSU, DO : 1.25411 mg/l, TURBIDITY : 0.6593 FTU [21:34:44] christophermah leaves the room [21:37:18] Ok, I am going to give a shot to getting the venus flytrap anemones sorted. These that have no stalks but rather are attached to coral branches are in the family Amphianhidae so are no longer considered to be hormathiids. They have a bumpy texture unlike another type of venus fly trap anemone that attaches to coral branches which are called Actinoscphia sp in the family Actinoscyphiidae. Hormathiids attach to the substrate and those with shorter stalks are Phelliactis sp. Those with longer stalks are Hormathia. That's the best I can come up with. [21:38:56] LAT : 26.878865 , LON : -168.097923 , DEPTH : 1057.9869 m, TEMP : 3.66318 C, SAL : 34.41142 PSU, DO : 1.24941 mg/l, TURBIDITY : 0.6654 FTU [21:39:35] I vote pyrosome [21:39:40] colonial salp [21:41:05] Also close up of the white one to the left? [21:41:10] ooo! is that a starfish? [21:41:14] Would it be possible to grab a rock at the top of this wall? [21:41:30] Chrysogorgia sp [21:43:56] LAT : 26.878784 , LON : -168.097895 , DEPTH : 1054.5835 m, TEMP : 3.69805 C, SAL : 34.40233 PSU, DO : 1.17992 mg/l, TURBIDITY : 0.6654 FTU [21:44:33] The crinoid is likely a thalasometrid since it has prehensile cirrhi [21:44:44] christophermah leaves the room [21:44:56] Is that a decent guess Chris Mah/ [21:46:25] It could also be in the family Antedontidae since they also have prehensile cirrhi [21:46:28] To that end, and as a general request, getting the squat associate with the coral is greatly appreciated! [21:47:52] is the is the coral you wanted Chris K? [21:47:59] Narella dichotoma now that I can see it better. Thanks. [21:48:49] The rock wall texture is slightly different than what we've seen downsection so far. Smaller diameter columns, and the FeMn crusts looks slightly thicker and more developed (botryoidal texture evident) [21:48:51] notice the dichotomous branching which is the basis for its name [21:48:56] LAT : 26.878778 , LON : -168.097939 , DEPTH : 1055.0917 m, TEMP : 3.68471 C, SAL : 34.40636 PSU, DO : 1.17568 mg/l, TURBIDITY : 0.6654 FTU [21:49:34] Val- we only have two rock boxes. So do you want second rock here or furthur up? [21:49:56] Brian, what's the max planned depth for this dive? [21:50:09] minimum, sorry [21:50:41] ~~880 but that will likley be up in the sediment [21:51:36] Cool, thanks. Another sample sometime soon would be great, but I don't think we'll see much that we can grab until we hit a shallower slope [21:51:40]