[00:35:08] megancromwell leaves the room [02:20:33] megancromwell leaves the room [10:02:58] NOAA Ship Okeanos Explorer just arrived on station at our target exploration site for Dive 16, a small submarine mound located 25 miles north of Mona Island off the northwest shore of Puerto Rico. Today's dive will explore seafloor habitats at 430-530 m depths for deep-sea fishes, corals, sponges and associated communities. We expect to be on the seafloor at ~~9:00 AST, and remain there until ~~16:15 AST. [10:03:13] We will have the pre-dive call at 8:15 AST [10:04:53] We encourage everyone to record their observations using SeaTubeV2, as this greatly helps the greater community. You can record your observations for today's dive using the following link: https://data.oceannetworks.ca/SeaTubeV2?resourceTypeId=1000&resourceId=23621&diveId=2200 [10:18:42] danielwagner leaves the room [11:43:54] EX1811_DIVE15 ROV powered off [11:52:55] EX1811 DIVE16 Test message [12:07:40] megancromwell leaves the room [12:15:06] Good morning everyone [12:15:23] hi Tara. We are just about to start the call [12:15:40] Great. I'm on the line [12:16:25] staceywilliams leaves the room [12:20:30] EX1811_DIVE16 ROV Launch [12:26:51] danielwagner leaves the room [12:29:18] EX1811_DIVE16 ROV on Surface [12:29:49] EX1811_DIVE16 ROV Descending [12:30:33] LAT : 18.520051 , LON : -67.837097 , DEPTH : 10.7652 m, TEMP : 28.23419 C, SAL : 35.69551 PSU, DO : 6.36321 mg/l [12:35:33] LAT : 18.519512 , LON : -67.836778 , DEPTH : 49.7989 m, TEMP : 27.8814 C, SAL : 36.74926 PSU, DO : 6.84368 mg/l [12:40:34] LAT : 18.519047 , LON : -67.836346 , DEPTH : 162.1786 m, TEMP : 21.96006 C, SAL : 36.95214 PSU, DO : 5.96247 mg/l [12:45:34] LAT : 18.518998 , LON : -67.836377 , DEPTH : 317.4273 m, TEMP : 17.06498 C, SAL : 36.35026 PSU, DO : 5.45408 mg/l [12:50:35] LAT : 18.518662 , LON : -67.836468 , DEPTH : 442.3006 m, TEMP : 13.78749 C, SAL : 35.8386 PSU, DO : 4.83441 mg/l [12:55:35] LAT : 18.518229 , LON : -67.836538 , DEPTH : 441.5175 m, TEMP : 14.28997 C, SAL : 35.91729 PSU, DO : 4.93119 mg/l [13:00:35] LAT : 18.517983 , LON : -67.836623 , DEPTH : 442.988 m, TEMP : 14.34947 C, SAL : 35.92678 PSU, DO : 4.93083 mg/l [13:04:39] danielwagner leaves the room [13:05:36] LAT : 18.518016 , LON : -67.83662 , DEPTH : 489.3563 m, TEMP : 13.59571 C, SAL : 35.80943 PSU, DO : 4.80199 mg/l [13:06:50] seafloor in sihgt [13:07:11] EX1811_DIVE16 ROV on Bottom [13:10:37] LAT : 18.518111 , LON : -67.836481 , DEPTH : 506.6265 m, TEMP : 13.44953 C, SAL : 35.78569 PSU, DO : 4.77217 mg/l [13:13:35] they also swim [13:15:37] LAT : 18.518074 , LON : -67.836334 , DEPTH : 507.5826 m, TEMP : 13.42146 C, SAL : 35.78279 PSU, DO : 4.77343 mg/l [13:19:28] danielwagner leaves the room [13:20:38] LAT : 18.518055 , LON : -67.836346 , DEPTH : 497.3329 m, TEMP : 13.00803 C, SAL : 35.71889 PSU, DO : 4.6947 mg/l [13:22:33] I think it's one sponge, but maybe one half is a bit fouled [13:25:38] LAT : 18.517992 , LON : -67.836174 , DEPTH : 490.7769 m, TEMP : 13.33572 C, SAL : 35.77023 PSU, DO : 4.77335 mg/l [13:28:07] megancromwell leaves the room [13:30:38] LAT : 18.517983 , LON : -67.836127 , DEPTH : 488.5893 m, TEMP : 13.4592 C, SAL : 35.7885 PSU, DO : 4.77523 mg/l [13:35:39] LAT : 18.517989 , LON : -67.836171 , DEPTH : 485.2785 m, TEMP : 13.32904 C, SAL : 35.76807 PSU, DO : 4.77013 mg/l [13:40:39] LAT : 18.517949 , LON : -67.836061 , DEPTH : 481.9451 m, TEMP : 13.65658 C, SAL : 35.81861 PSU, DO : 4.80658 mg/l [13:41:18] sample the new tunicate? [13:43:24] Worth a look for sure. [13:45:40] LAT : 18.517897 , LON : -67.836038 , DEPTH : 478.3114 m, TEMP : 13.60959 C, SAL : 35.8124 PSU, DO : 4.79914 mg/l [13:48:23] Timestamp (UTC) 20181116 13:47:46 Sample ID EX1811_D16_01B Sample Box PO Field ID tunicate-Chordata Longitude, Latitude -67.836069, 18.517888 Depth (CTD) 497.5685 Salinity 35.73078 Temperature 12.82092 Oxygen 4.44847 [13:50:40] LAT : 18.517912 , LON : -67.836036 , DEPTH : 477.5514 m, TEMP : 13.9172 C, SAL : 35.8605 PSU, DO : 4.85069 mg/l [13:55:41] LAT : 18.517912 , LON : -67.835984 , DEPTH : 475.1928 m, TEMP : 14.13653 C, SAL : 35.89418 PSU, DO : 4.8964 mg/l [14:00:41] LAT : 18.51787 , LON : -67.836065 , DEPTH : 474.1572 m, TEMP : 14.08024 C, SAL : 35.88528 PSU, DO : 4.8838 mg/l [14:05:42] LAT : 18.517861 , LON : -67.836045 , DEPTH : 475.1666 m, TEMP : 14.29858 C, SAL : 35.91851 PSU, DO : 4.9161 mg/l [14:10:42] LAT : 18.517809 , LON : -67.835939 , DEPTH : 471.0045 m, TEMP : 14.35911 C, SAL : 35.9277 PSU, DO : 4.93257 mg/l [14:11:20] associate on black coral [14:11:42] on other side [14:14:10] two squat lobsters [14:14:22] and one snapping shrimp [14:15:43] LAT : 18.517767 , LON : -67.835934 , DEPTH : 468.1257 m, TEMP : 14.3569 C, SAL : 35.92821 PSU, DO : 4.92973 mg/l [14:20:43] LAT : 18.517734 , LON : -67.835777 , DEPTH : 465.0819 m, TEMP : 14.3796 C, SAL : 35.9312 PSU, DO : 4.93564 mg/l [14:25:44] LAT : 18.517715 , LON : -67.835797 , DEPTH : 462.7863 m, TEMP : 14.32309 C, SAL : 35.92272 PSU, DO : 4.93132 mg/l [14:26:09] couldnt tell fish ID, front not seen [14:28:26] I think it might be a Monomitopus [14:30:35] would need to see rays of pelvic fins too [14:30:46] LAT : 18.517732 , LON : -67.835795 , DEPTH : 460.2363 m, TEMP : 14.30314 C, SAL : 35.91913 PSU, DO : 4.92321 mg/l [14:35:45] LAT : 18.51765 , LON : -67.835673 , DEPTH : 457.7654 m, TEMP : 14.42175 C, SAL : 35.93766 PSU, DO : 4.94284 mg/l [14:40:37] 2 fish [14:40:51] LAT : 18.517668 , LON : -67.835671 , DEPTH : 455.9027 m, TEMP : 14.44715 C, SAL : 35.94143 PSU, DO : 4.95011 mg/l [14:45:28] Timestamp (UTC) 20181116 14:45:02 Sample ID EX1811_D16_02B Sample Box SI Field ID small vase sponge- Euplectillid Longitude, Latitude -67.835748, 18.517582 Depth (CTD) 473.8143 Salinity 35.7472 Temperature 12.8377 Oxygen 4.45846 [14:45:46] LAT : 18.517677 , LON : -67.835687 , DEPTH : 455.2839 m, TEMP : 14.52326 C, SAL : 35.95286 PSU, DO : 4.96131 mg/l [14:47:47] @michelle they looked like greeneyes, Chlorophthalmus agassizi [14:50:46] LAT : 18.517664 , LON : -67.835703 , DEPTH : 456.0547 m, TEMP : 14.53405 C, SAL : 35.95526 PSU, DO : 4.97241 mg/l [14:55:47] LAT : 18.51766 , LON : -67.83566 , DEPTH : 454.6746 m, TEMP : 14.61779 C, SAL : 35.96806 PSU, DO : 4.98535 mg/l [15:00:47] LAT : 18.517607 , LON : -67.835542 , DEPTH : 449.3444 m, TEMP : 14.70237 C, SAL : 35.98122 PSU, DO : 4.99424 mg/l [15:05:48] LAT : 18.517574 , LON : -67.835466 , DEPTH : 444.4956 m, TEMP : 14.71561 C, SAL : 35.98364 PSU, DO : 4.99044 mg/l [15:06:08] That's the same as the shell from that last hermit crab. [15:06:35] yes! [15:08:20] Regarding the small fish seen sheltering beneath the large Callogorgia: That appears to be a very small juvenile of the Bearded Brotula, Brotula barbata. This is a very large species, adults up to 1 m long and heavy bodied. Adults are cryptic, usually seen with the head only showing while hiding under a ledge or within a cave. I do not think the juvenile has ever been imaged - and its habitat has not been known. ID not certain here, but the plain grayish color, whitish abdomen, caudal pointed and merged evenly with dorsal and anal fins is right. And I did see what appears to be one of the chin barbels. [15:08:50] very cool, Ken! [15:09:07] thanks Ken! [15:10:48] LAT : 18.517548 , LON : -67.835416 , DEPTH : 444.4835 m, TEMP : 14.82655 C, SAL : 36.0007 PSU, DO : 5.02391 mg/l [15:11:44] The brotula may have a specific commensal relationship with the Callogorgia or with the basketstar. I was surprised to see the fish nose into the basketstar several times without getting stuck. Other little fishes do that at their peril, immediately getting stuck, wrapped within the curling arm tips and eventually consumed. Maybe the little brotula has immunity to getting eaten - like an anemone fish [15:15:15] nursery habitat [15:15:49] LAT : 18.517586 , LON : -67.835314 , DEPTH : 443.1171 m, TEMP : 14.78138 C, SAL : 35.99374 PSU, DO : 5.01486 mg/l [15:19:26] megancromwell leaves the room [15:20:49] LAT : 18.51763 , LON : -67.835184 , DEPTH : 443.3258 m, TEMP : 14.73174 C, SAL : 35.98611 PSU, DO : 4.98732 mg/l [15:23:49] perhaps not the right habitat... [15:25:50] LAT : 18.51769 , LON : -67.835056 , DEPTH : 439.2539 m, TEMP : 14.81254 C, SAL : 35.99788 PSU, DO : 5.0116 mg/l [15:30:50] LAT : 18.517706 , LON : -67.834985 , DEPTH : 438.9633 m, TEMP : 14.84335 C, SAL : 36.00332 PSU, DO : 5.0296 mg/l [15:35:51] LAT : 18.517739 , LON : -67.834865 , DEPTH : 434.7761 m, TEMP : 14.85474 C, SAL : 36.00552 PSU, DO : 5.02069 mg/l [15:40:51] LAT : 18.517723 , LON : -67.834846 , DEPTH : 435.6673 m, TEMP : 14.82351 C, SAL : 36.00055 PSU, DO : 5.01561 mg/l [15:41:15] @Steve: I've been asking you to ask Chris M. about those "toothed" oral spines a couple of times! Now I realize you haven't realized I meant specifically those spines - that you must have thought I meant the general spination. [15:41:52] I just noticed the oral surface spines have a different morphology than the aboral spines [15:42:11] Much more serrated and slighly curved [15:42:18] @Steve: which is to also say, those more jagged oral spines have been a feature on all the Histopcidaris I've seen this past couple of weeks. [15:43:20] Chris mentioned he wasn't sure about the function of those spines on a call-in a few days ago. Any guess is a good one at this point. [15:44:01] Defense seems to be the logical choice but it could have somthing to do with providing "steps" or arm-holds if ophiuroids wanted to ride along. [15:44:12] They sure look like they'd be good for sawing through something. [15:44:33] Note: I'm talking specifically about the oral spines, note the general ones. [15:44:58] Ah ok [15:45:44] aurearodriguez leaves the room [15:45:52] LAT : 18.517796 , LON : -67.83458 , DEPTH : 433.6292 m, TEMP : 14.78596 C, SAL : 35.99455 PSU, DO : 5.00476 mg/l [15:50:52] LAT : 18.517827 , LON : -67.834428 , DEPTH : 428.9533 m, TEMP : 14.84657 C, SAL : 36.00368 PSU, DO : 5.0214 mg/l [15:51:10] Tough one to call, especially from that angle and distance. [15:51:38] Lots of missing polyps on that Narella [15:52:19] Its likely N. regularis. Identical in colony morphology to what we were observing in AP this depth. Of course, would need a specimen to confirm. [15:53:31] Other option, would be N. pauciflora but the distribution is much deeper for that sp. based on my own observations. [15:55:34] The audio has disappeared. [15:55:52] The other option, which i havent observed in this area is N. bellissima but I've never observed that in this area. [15:56:06] LAT : 18.517896 , LON : -67.834323 , DEPTH : 425.0898 m, TEMP : 14.87112 C, SAL : 36.00745 PSU, DO : 5.02002 mg/l [16:00:53] LAT : 18.517892 , LON : -67.834127 , DEPTH : 421.9222 m, TEMP : 14.97003 C, SAL : 36.02368 PSU, DO : 5.04281 mg/l [16:05:53] LAT : 18.517895 , LON : -67.834139 , DEPTH : 425.2081 m, TEMP : 14.99062 C, SAL : 36.02615 PSU, DO : 5.03813 mg/l [16:09:36] Scyliorhinus sp. [16:09:43] kensulak leaves the room [16:10:53] After following up with Cairns & Bayer 2003, its also reasonable that it could be N bellissima. Its been reported as amphi-atlantic with one specimen previously from this passage. [16:10:59] LAT : 18.517901 , LON : -67.834073 , DEPTH : 422.9006 m, TEMP : 15.0464 C, SAL : 36.03441 PSU, DO : 5.04094 mg/l [16:11:46] not afraid of lights! [16:11:54] megancromwell leaves the room [16:12:04] not at all [16:12:15] big one! [16:12:28] back to shark! [16:13:26] did we get lasers on shark? [16:13:42] at the beginning [16:13:56] great! [16:14:12] Hello. We have a group of visitors in the Harbor Branch ECC watching the dive. They love the cat shark! [16:14:27] We may have sme questions for you. . . [16:14:42] Hi Jim [16:15:54] LAT : 18.517886 , LON : -67.834099 , DEPTH : 422.1332 m, TEMP : 15.05925 C, SAL : 36.03704 PSU, DO : 5.0509 mg/l [16:20:05] Question from Harbor Branch: How many sharks are egglayers versus livebearers? Is one evolutionarily more recent than the other or is it a mixed bag? [16:20:55] LAT : 18.517876 , LON : -67.834006 , DEPTH : 421.2612 m, TEMP : 15.04487 C, SAL : 36.03445 PSU, DO : 5.05904 mg/l [16:24:32] Hi Jim, 30% of shark species are oviparious (eggs hatch outside the mother) [16:25:19] Thanks Stacy! Do those tend to be more ancestral groups or is there any pattern to that? [16:25:38] Am calling in to fix that! [16:25:55] LAT : 18.517862 , LON : -67.833799 , DEPTH : 420.7039 m, TEMP : 15.06497 C, SAL : 36.03748 PSU, DO : 5.04676 mg/l [16:26:18] Yay! [16:27:38] gloriacanon leaves the room [16:30:56] LAT : 18.517875 , LON : -67.833754 , DEPTH : 419.451 m, TEMP : 15.0967 C, SAL : 36.04252 PSU, DO : 5.05506 mg/l [16:31:10] are we on 'top'? [16:31:23] Harbor Branch Question: How many ECCs are there currently and how many of them are located outside of the US? [16:33:33] Ariosoma [16:35:21] Araeosoma* urchin oops [16:35:42] Some of these plexaurids we cannot put names to may warrant a collection. The white colony in particular is interesting but the yellow "Paramuricea" wouldn't be a bad candidate either. [16:35:59] LAT : 18.517876 , LON : -67.833528 , DEPTH : 418.1796 m, TEMP : 15.15505 C, SAL : 36.04819 PSU, DO : 5.06464 mg/l [16:36:33] Hello all [16:37:44] Hi Asako [16:37:58] Hi Asako [16:38:18] Morning! Or afternoon! Or evening! Something... [16:38:36] Hi Tara, Steve! [16:38:48] @ Jim: For this expedtion we have a total of 10 active exploration command centers, all of which are in the U.S. [16:39:05] @Scott late----night!! [16:39:17] @michelle yes we are on top [16:40:57] LAT : 18.51788 , LON : -67.833558 , DEPTH : 420.3085 m, TEMP : 15.10298 C, SAL : 36.04238 PSU, DO : 5.04759 mg/l [16:42:13] Thanks for the ECC tally Dan! [16:42:27] we have them in Puerto Rico, Hawaii, Rhode Island, Maryland, South Carolina, Seattle, New Hampshire & Mississippi [16:43:59] Hi all [16:44:13] This seems to be a Lithistidae [16:44:31] truly hard sponges [16:45:57] LAT : 18.517883 , LON : -67.833542 , DEPTH : 419.4276 m, TEMP : 14.95222 C, SAL : 36.02127 PSU, DO : 5.041 mg/l [16:46:31] Nice work! [16:47:33] Hi Iris! [16:47:40] Timestamp (UTC) 20181116 16:47:04 Sample ID EX1811_D16_03B Sample Box SO Field ID sponge Longitude, Latitude -67.833563, 18.517951 Depth (CTD) 434.1803 Salinity 35.98875 Temperature 14.46166 Oxygen 4.72998 [16:47:46] irissampaio leaves the room [16:48:16] megancromwell leaves the room [16:48:29] Good collection! [16:49:19] I'll echo that! [16:50:58] LAT : 18.51788 , LON : -67.83351 , DEPTH : 419.1615 m, TEMP : 14.87215 C, SAL : 36.00852 PSU, DO : 5.01803 mg/l [16:51:28] Hi @asako [16:52:44] The crinoid is Endoxocrinus species (perhaps parrae). These cidarid urchins are known to prey on these stalked crinoids, which can crawl away from their predators, often dropping a terminal portion of the stalk, like a lizard's tail. [16:53:37] Spot on, Chris! [16:53:50] joanaxavier leaves the room [16:55:22] Could those common zoantharians growing on top of a stalk be growing on a crinoid stalk? [16:55:36] Any possibility of collecting both one of these large stalked crinoids AND one of the much smaller white ones that I saw in the distance? The taxonomic status of the species in genus Endoxocrinus has yet to be worked out, and samples for sequencing are needed. [16:55:58] LAT : 18.517863 , LON : -67.833364 , DEPTH : 417.9396 m, TEMP : 14.96951 C, SAL : 36.02405 PSU, DO : 5.03816 mg/l [16:56:18] jasonchaytor leaves the room [16:56:52] I'm off to lecture. [16:56:56] joanaxavier leaves the room [16:58:07] irissampaio leaves the room [16:59:01] joanaxavier leaves the room [17:00:46] irissampaio leaves the room [17:00:59] LAT : 18.51786 , LON : -67.833362 , DEPTH : 419.0065 m, TEMP : 14.87794 C, SAL : 36.00911 PSU, DO : 5.02847 mg/l [17:02:59] irissampaio leaves the room [17:04:52] joanaxavier leaves the room [17:05:59] LAT : 18.517885 , LON : -67.83337 , DEPTH : 417.4004 m, TEMP : 14.97105 C, SAL : 36.02364 PSU, DO : 5.03213 mg/l [17:07:34] irissampaio leaves the room [17:08:39] irissampaio leaves the room [17:11:00] LAT : 18.517953 , LON : -67.833399 , DEPTH : 416.7541 m, TEMP : 14.92859 C, SAL : 36.01951 PSU, DO : 5.0284 mg/l [17:15:02] Sample ID: EX1811_D16_04B Sample Box: PI Field ID: Endoxocrinus sp. Longitude, Latitude: -67.8335, 18.51792 Depth (CTD): 433.3313 Salinity : 35.93123 Temperature 14.08363 Oxygen 4.6601 [17:16:00] LAT : 18.51797 , LON : -67.833439 , DEPTH : 417.2401 m, TEMP : 14.94458 C, SAL : 36.01867 PSU, DO : 5.02722 mg/l [17:17:33] irissampaio leaves the room [17:20:28] kateoverly leaves the room [17:21:01] LAT : 18.517966 , LON : -67.833415 , DEPTH : 418.6112 m, TEMP : 14.90663 C, SAL : 36.01352 PSU, DO : 5.02417 mg/l [17:23:01] irissampaio leaves the room [17:23:54] irisampaio: I missed seeing the zoanthids, but I have never seen them on the stalk of this kind of crinoid. Often have seen zoanthids on dead stalked glass sponge stalks (Hyalonema). [17:24:12] charlesmessing leaves the room [17:26:01] LAT : 18.517874 , LON : -67.83338 , DEPTH : 420.3566 m, TEMP : 14.90961 C, SAL : 36.01315 PSU, DO : 5.02107 mg/l [17:31:02] LAT : 18.517918 , LON : -67.833267 , DEPTH : 419.6558 m, TEMP : 14.99826 C, SAL : 36.02788 PSU, DO : 5.03431 mg/l [17:31:04] Thanks @charlesmessing. They seem to be common in the last couple of dives or even previous dives I have missed. Nonetheless I have not seen many sponge stalks nearby [17:33:08] irissampaio leaves the room [17:36:02] LAT : 18.517888 , LON : -67.833186 , DEPTH : 418.615 m, TEMP : 15.13078 C, SAL : 36.04693 PSU, DO : 5.06046 mg/l [17:36:19] likely habitat dependent coloration [17:36:41] irissampaio leaves the room [17:37:34] @Iris @Chuck We were thinking they may be old coral stalks. Probably black corals like these Parantipathes/Stylopathes sp. we're seeing. No Hyalonematid corals observed here. [17:40:00] Agree Parantipathes [17:40:13] I have seen branching ones as well [17:41:03] LAT : 18.517897 , LON : -67.833007 , DEPTH : 416.3247 m, TEMP : 15.32775 C, SAL : 36.07632 PSU, DO : 5.08892 mg/l [17:42:08] \Fish is genus Pontinus [17:42:22] It would be interesting to sample one of those colonised stalks. The zoantharians are common and probably new [17:42:51] Pontinus nematophthalmus [17:43:05] thanks michelle [17:43:31] thanks dan and michelle [17:44:02] irissampaio leaves the room [17:46:03] LAT : 18.517887 , LON : -67.832923 , DEPTH : 417.4277 m, TEMP : 15.18938 C, SAL : 36.05549 PSU, DO : 5.06599 mg/l [17:49:20] could video pan around/up once in a wile [17:49:33] *while [17:49:46] stylasterito [17:50:11] little stylaster :) [17:51:04] LAT : 18.51788 , LON : -67.832806 , DEPTH : 418.1654 m, TEMP : 15.41809 C, SAL : 36.09052 PSU, DO : 5.09834 mg/l [17:53:53] irissampaio leaves the room [17:56:04] LAT : 18.517864 , LON : -67.832666 , DEPTH : 418.4158 m, TEMP : 15.25568 C, SAL : 36.06686 PSU, DO : 5.07357 mg/l [18:00:15] Callistoma? [18:01:05] LAT : 18.517835 , LON : -67.832475 , DEPTH : 418.5115 m, TEMP : 15.33411 C, SAL : 36.07788 PSU, DO : 5.07331 mg/l [18:01:58] zachproux leaves the room [18:03:22] irissampaio leaves the room [18:06:05] LAT : 18.517871 , LON : -67.83241 , DEPTH : 416.7302 m, TEMP : 15.39383 C, SAL : 36.08693 PSU, DO : 5.08792 mg/l [18:09:00] irissampaio leaves the room [18:10:45] irissampaio leaves the room [18:11:06] LAT : 18.517891 , LON : -67.832251 , DEPTH : 418.4924 m, TEMP : 15.27902 C, SAL : 36.06948 PSU, DO : 5.0742 mg/l [18:11:46] irissampaio leaves the room [18:16:06] LAT : 18.517881 , LON : -67.83205 , DEPTH : 418.4322 m, TEMP : 15.26166 C, SAL : 36.06654 PSU, DO : 5.05986 mg/l [18:18:15] I swear I was going to ask this BEFORE we saw the last bamboo coral: can you update me on sampling for today? Collection info isn't in SeaTube annotations so can't search that way. [18:18:49] we have four collections, 2 sponges, tunicate and crinoid [18:19:05] Thanks @Stacey. [18:21:07] LAT : 18.517878 , LON : -67.832048 , DEPTH : 417.3297 m, TEMP : 15.21776 C, SAL : 36.0594 PSU, DO : 5.06301 mg/l [18:22:04] Paramuricea placomus has colonies that are mixed purple and yellow, like this one. [18:22:52] And we are in the right depth range for that species. [18:24:43] absolutely [18:26:07] LAT : 18.517886 , LON : -67.832063 , DEPTH : 418.3411 m, TEMP : 15.24157 C, SAL : 36.06364 PSU, DO : 5.07268 mg/l [18:31:08] LAT : 18.517846 , LON : -67.831841 , DEPTH : 418.2889 m, TEMP : 14.99691 C, SAL : 36.02731 PSU, DO : 5.04173 mg/l [18:36:08] LAT : 18.517848 , LON : -67.831855 , DEPTH : 418.5269 m, TEMP : 15.07093 C, SAL : 36.03912 PSU, DO : 5.0403 mg/l [18:37:44] and UP! [18:38:04] Anyone else having video issues? [18:38:55] @Megan: I haven't noticed any, but I have been in and out all morning. [18:41:09] LAT : 18.517874 , LON : -67.831766 , DEPTH : 417.2796 m, TEMP : 15.14134 C, SAL : 36.04946 PSU, DO : 5.05807 mg/l [18:41:28] @Steve: I realize we are full on collections today, but if on a future dive we encounter these isidids again, I'd love to see a collection considered. [18:42:26] Thanks Scott. [18:43:22] @Scott understood about the sampling the coral [18:44:51] danielwagner leaves the room [18:46:09] LAT : 18.517862 , LON : -67.831666 , DEPTH : 418.6607 m, TEMP : 14.9381 C, SAL : 36.01893 PSU, DO : 5.03673 mg/l [18:48:38] Tilefishes have big eyes and some have colored tails, but not sure about black spot on dorsal [18:49:34] but tilefish would have one continuous dorsal, did this have 2? [18:49:55] i don't think so [18:50:10] I will try to get a close up of another [18:50:49] Just a note for the future, we have about 1 hr 15 mins left on bottom. We will plan to have the post dive call as soon as we can come off bottom due to the shallow depth here. This will take place about 4:07 AST/3:07EST today. [18:51:10] LAT : 18.517839 , LON : -67.831469 , DEPTH : 418.3372 m, TEMP : 14.95968 C, SAL : 36.02196 PSU, DO : 5.03596 mg/l [18:51:20] We will plan to look at tomorrow's dive (including midwater portion) as well as the following day's dive. [18:51:50] joanaxavier leaves the room [18:52:00] All the crinoids were over here! [18:55:12] laurenwalling leaves the room [18:56:10] LAT : 18.517864 , LON : -67.831299 , DEPTH : 417.8082 m, TEMP : 15.5054 C, SAL : 36.10247 PSU, DO : 5.09894 mg/l [18:56:45] was that another crinoid moving using its arms? [18:57:23] it is. [19:01:07] Now we can see yellow on the base of the isidid [19:01:22] LAT : 18.517888 , LON : -67.83126 , DEPTH : 416.1303 m, TEMP : 15.60913 C, SAL : 36.11764 PSU, DO : 5.10997 mg/l [19:01:37] We will check that out after the urchin [19:01:53] Very voracious sea urchins today! [19:02:47] Prison bars! [19:03:00] @Steve: I was going to say this on the post-dive call, but over the past 15 min I have been looking more closely in my database and had come to the conclusion that all these isidids are S1 and not D-clade Keratoisis. This yellow on this colony supports that. [19:03:12] As does the depth. [19:05:16] Hemocoelomic bath. [19:05:29] That's very interesting. I'd love to know more about the yellow coloration. If its chemical or microbial? I've seen it on unbranched colonies also in this area. [19:06:11] LAT : 18.517834 , LON : -67.831271 , DEPTH : 418.529 m, TEMP : 15.27067 C, SAL : 36.0751 PSU, DO : 5.07397 mg/l [19:07:54] These observations (of the isidid) for me make this less of a collection priority. [19:08:08] gotcha [19:08:18] Great observation of the echinoderm on echinoderm predation though! [19:09:25] they are eating bamboos too scott [19:10:55] danielwagner leaves the room [19:11:11] LAT : 18.517838 , LON : -67.831189 , DEPTH : 416.752 m, TEMP : 15.23071 C, SAL : 36.06152 PSU, DO : 5.06416 mg/l [19:14:41] hi everyone! Sorry that I haven't been able to join the chat room during this expedition [19:16:12] LAT : 18.517875 , LON : -67.831097 , DEPTH : 421.5029 m, TEMP : 14.83532 C, SAL : 36.00232 PSU, DO : 5.01007 mg/l [19:17:56] Hi Joana, we have sampled a number of sponges that Tom and you mentioned. These past few days have been hot sites for sponges. There is still one we haven't seen yet again but we're keeping an eye out. [19:18:15] slit-shell snail above lasers [19:18:53] @Steve thanks, that's great! [19:20:37] @Stacey: I had to step away - it was too much to bear. ;-) [19:21:12] LAT : 18.517804 , LON : -67.830994 , DEPTH : 420.1013 m, TEMP : 14.81422 C, SAL : 35.99962 PSU, DO : 5.01075 mg/l [19:22:00] Might have been a little primnoid in front of the bottle. [19:24:40] oil bucket lid? [19:25:11] @Scott alot of the white whips we've seen are black stalks with white zoanthids [19:25:23] Will take another second glance but that one looked like the same to me [19:26:08] @Steve: copy that. Did see those earlier and heard the discussion about what the stalk might be. [19:26:18] LAT : 18.517838 , LON : -67.830898 , DEPTH : 419.7797 m, TEMP : 14.79516 C, SAL : 35.99703 PSU, DO : 5.01104 mg/l [19:26:28] I have a new appreciation for crionoids as a food source! [19:26:48] And a new appreciation for cidarids as voracious! [19:27:21] yep! there is enough of them here [19:28:58] Um... waht does a worried urchin look like? [19:29:07] ;-) [19:29:17] spine tips up? [19:29:25] defensive posture? [19:29:44] Maybe should flip over and bare those spikey "fangs" [19:30:48] Rich Mooi has sent along a series of emails to us with some fantastic context and background on these spp. Histocidaris nuttingi is the species we know now. [19:31:13] LAT : 18.517857 , LON : -67.830725 , DEPTH : 418.4773 m, TEMP : 14.91926 C, SAL : 36.01601 PSU, DO : 5.0253 mg/l [19:31:25] I am off to lab meeting but will be back for post-dice call at 4:07 AST/3:07EST. I'll be lurking on vidoe and chat though. [19:33:02] laurenwalling leaves the room [19:33:12] danielwagner leaves the room [19:34:58] scottfrance leaves the room: Replaced by new connection [19:36:14] LAT : 18.517833 , LON : -67.830602 , DEPTH : 419.0633 m, TEMP : 15.44568 C, SAL : 36.09474 PSU, DO : 5.08878 mg/l [19:38:09] fish was Cyttopsis rosea [19:38:40] thanks michelle! [19:39:30] joanaxavier leaves the room [19:41:14] LAT : 18.517861 , LON : -67.830542 , DEPTH : 419.1393 m, TEMP : 15.39147 C, SAL : 36.08604 PSU, DO : 5.0918 mg/l [19:46:15] LAT : 18.517867 , LON : -67.830373 , DEPTH : 418.5637 m, TEMP : 15.40304 C, SAL : 36.08843 PSU, DO : 5.09443 mg/l [19:51:15] LAT : 18.517881 , LON : -67.830286 , DEPTH : 416.0677 m, TEMP : 15.43263 C, SAL : 36.09336 PSU, DO : 5.10308 mg/l [19:53:18] lovely demosponge, possibly Phakellia [19:56:16] LAT : 18.51791 , LON : -67.830177 , DEPTH : 416.0671 m, TEMP : 15.41809 C, SAL : 36.08998 PSU, DO : 5.08542 mg/l [19:58:05] spines of operculum are used for ID [20:01:16] LAT : 18.517911 , LON : -67.829977 , DEPTH : 416.6341 m, TEMP : 14.85526 C, SAL : 36.00687 PSU, DO : 5.03021 mg/l [20:06:17] LAT : 18.517982 , LON : -67.830076 , DEPTH : 415.7014 m, TEMP : 14.81898 C, SAL : 36.00077 PSU, DO : 5.02293 mg/l [20:06:28] danielwagner leaves the room [20:06:35] Thanks everyone for a great dive! Unfortunately I have to miss tomorrow's dive, so I'll skip the call. [20:06:49] ok Tara thanks [20:07:01] ok thanks tara [20:07:19] EX1811_DIVE16 ROV Ascending [20:07:31] taraluke leaves the room [20:07:44] megancromwell leaves the room [20:09:47] Just signed on again to see at the very end that there appeared to be two consistently different-looking stalked crinoids. If the little white one was a juvenile of the large purple one, I would have expected intermediates. Did you see any? If not, the possibility exists that they might be different, and worth collecting a smaller white one if seen on subsequent dives. I will try to join the post-dive call. [20:11:00] joanaxavier leaves the room [20:11:13] on text only, voice not working [20:11:17] LAT : 18.51795 , LON : -67.830069 , DEPTH : 406.0051 m, TEMP : 15.00441 C, SAL : 36.02873 PSU, DO : 5.03504 mg/l [20:11:24] @michelle got you! [20:12:05] charlesmessing leaves the room [20:13:31] agree! fill the holes [20:15:47] meganmcculler leaves the room [20:16:18] LAT : 18.517922 , LON : -67.829934 , DEPTH : 270.4581 m, TEMP : 17.82555 C, SAL : 36.47422 PSU, DO : 5.62268 mg/l [20:19:09] scottfrance leaves the room [20:21:18] LAT : 18.518103 , LON : -67.829365 , DEPTH : 130.709 m, TEMP : 23.49955 C, SAL : 37.08109 PSU, DO : 6.22848 mg/l [20:22:39] danielwagner leaves the room [20:26:19] LAT : 18.518231 , LON : -67.829147 , DEPTH : 50.8568 m, TEMP : 28.23381 C, SAL : 36.36131 PSU, DO : 6.37135 mg/l [20:31:19] LAT : 18.518194 , LON : -67.828542 , DEPTH : 38.4912 m, TEMP : 28.22336 C, SAL : 36.3188 PSU, DO : 6.37435 mg/l [20:34:15] EX1811_DIVE16 ROV on Surface [20:37:54] Steve Auscavitch leaves the room [20:39:25] staceywilliams leaves the room [20:47:22] michellescharer leaves the room [20:50:27] kateoverly leaves the room [20:50:57] EX1811_DIVE16 ROV Recovery Complete [21:03:12] jimmasterson leaves the room [22:02:25] megancromwell leaves the room [22:17:30] asakomatsumoto leaves the room [22:51:35] chat-admin leaves the room