The Dredgings Newsletter of The Pacific Northwest Shell Club

July - August, 2016 Volume 56 No. 4Calliostoma annulatum (Lightfoot, 1786)

INSIDE THIS ISSUE Page 2: Club Information - New Library Additions! - New Members Page 3: Field Trip Report - Big Fish trap Cove, Olympia, May 7, 2016, Minus 2.6 foot tide by Bert Bartleson Page 4: Intertidal Monitoring Event at Point Whitehorn, Birch Bay, Whatcom County by Linda Schroeder Page 5: May and June Program Recaps by Richard Longfelder Page 6: Range Extensions During El Nino Events by Linda Schroeder - Hemissenda crassicornis photographed at Tsulquate Beach on Vancouver Island by George Holm Page 7: Two Hermissenda species and a trip to Oregon to find them by Linda Schroeder - Cuspidaria tomricei, new species named for club’s founder by George Holm Page 8: Cool things our members have seen this spring Page 9: Shelling in the local Asian markets - Neverita duplicata found for sale in Richmond by George Holm Page 10 : August 2016 Oral Auction

July - no meeting

Sunday August 21, 2 PM Annual Oral AuctionThis year our annual Oral Auction will take place at our church meeting location. The auction items come from a variety of sources. We have many large specimen shells in the mix. Member, Janet Armbrust Gurr, has generously donated some premium book titles. There are also some wonderful cowries and Hawaiian land snails from an older collection. Make special note of the Hawaiian Achatinella. They are protected species now only available from old collections. Some are now listed as extinct. See list of auction items on page 10.Preview begins at 1pm, with the auction commencing at 2pm. A box of 25 cent shells will also be available beginning at 1pm. See you there!

Alex Sassi spotted this albino Lepidozona radians (Carpenter, 1892) while at Oak Bay in Washington on June 5th. It was under a rock right at the water’s edge and it is a new species for our Oak Bay list. See “Cool things our members have seen this spring” on page 8

© Alex Sassi photo

About The ClubThe Pacific Northwest Shell Club was established in 1960 with its purpose to promote the study of molluscs and their habitats. Meetings feature educational presentations. The business meetings begins at 2pm, but most arrive around 1pm to socialize. Visitors are always welcome. Meeting dates can be found in the newsletter and are on our website at www.PNWSC.org.

Our Meeting Place Bethel Lutheran Church 17529 15th Ave NE in ShorelineDriving Directions - Take Exit 176 off I-5. (NE 175th St). Drive EAST to 15th Ave. Turn left. It is the fourth building on the left. Park in the back. Our room is on the lower floor, southwest corner.

NOTE: - The church recently moved - this is a new location.

Club Pin

Dan Wood photo

CLUB OFFICERS (2016)

President - Raymond Bily

email - rbily@brightarrow.com

Vice President - Richard Longfelder

Co-Recording Secretaries

Truus Lagerman and Ben Mous

Corresponding Secretary - Margaret Bily

Treasurer - Shary Almasi

COMMITTEESThe Dredgings

Editor - George Holm

Assoc. Editor - Linda Schroeder

Copying and Circulation - Terry Almasi

Webmaster - Linda Schroeder

Field Trip Coordinator - Bert Bartleson

Email contact for all:

PNWSC60@gmail.com

Club NewsletterThe Club newsletter, The Dredgings, is issued six times per year and is sent to members via email.

Articles and items for The Dredgings need to be submitted to the editor no later than the 15th of the month - Feb., Apr., June, Aug., Oct., Dec. - in order to be included in the upcoming newsletter.The opinions and views expressed in The Dredgings are those of the authors and are not necessarily those of the Pacific Northwest Shell Club.

Club Membership

Dues are $15 per calendar year, for an individual or a family. Please give dues to to our treasurer, Shary Almasi, at a meeting or it can be mailed to 2306 12th Avenue East, Seattle, WA 98102.Checks should be made payable to the Pacific Northwest Shell Club.

Club Badge

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New MembersWe welcome the following new members and look forward to seeing them at meetings.Rhoda Green, Renton WAJeff Goddard, Los Olivos, CA

New Library Additions! Member, Janet Armbrust Gurr, has generously donated two dozen volumes from her personal library to the club library. These titles will be available to borrow by the next meeting. Some of the highlights include the "Conchological Iconography" Strombidae and Harpidae volumes, Kozloff's "Seashore Life of the Northern Pacific Coast" and "Marine Invertebrates of the Pacific Northwest", Abbott's "Seashells of the Northern Hemisphere" and "Seashells of Southeast Asia", and Oldroyd's "Marine Shells of Puget Sound and Vicinity". Also included are some volumes on freshwater mollusks, southern and east African shells and other assorted regional worldwide books.

Field Trip Report - Big Fishtrap Cove, Olympia, May 7, 2016, Minus 2.6 foot tide By Bert Bartleson

The first field trip for the PNWSC during 2016 turned out to be on a beautiful, sunny spring day nearing 80⁰ F in the early afternoon. Members, Tom and Carol Lee Roalkvam and their daughter, Jane, were our hosts. In addition to the Roalkvams, our group included myself, Linda Schroeder, Ann Kilby, PNWSC scholarship winner and WWU student Lillian Kuehl, and Carol Lee’s sister, Susan Galligar.

Once we had gathered at about 11:30 AM, Tom led us through his backyard and down a path through the salal, descending to the very muddy beach below. This location is a shallow lagoon and drains quickly at low tide. The water had already drained out of the cove by the time we hit the beach. Tom showed us a path to avoid the most treacherous muddy areas and we carefully picked our way down to the main channel to begin exploring. Jane was also accompanied by two friends, Jasmine and Katherine, from Olympia High School. They are currently taking biology and needed a project. This beach survey fulfilled their project requirements. Their enthusiasm and keen eyesight helped, no doubt, to find some otherwise overlooked creatures. In addition to mollusks they managed to find a large flatworm (most likely Notoplana sanguinea). We had first visited this location in 2009. One of the things we like to do is to see what has changed from previous visits. Sometimes we miss species

because they are uncommon or their distribution isn’t uniform. On occasion an introduced species arrives and becomes established since the previous survey. It also happens that a species has disappeared for some reason. We found that in a small side arm of the main cove, there were 10,000’s of Mudflat snails, Batillaria attramentaria (G.B. Sowerby I, 1855). We completely missed them last time. Apparently we didn’t search that spot on our last trip in 2009. This species is an introduced mollusk that arrived with Japanese oysters and is common near areas where oysters have been raised. A second new find for us was the Yoldia-shaped Macoma, Macoma yoldiformis Carpenter, 1864. By screening the mud we were easily able to find about 10 of these very uncommon, small bivalves. I had previously found a few at nearby Burfoot County Park during a minus

4.2 foot tide in 2009. That was the first time I had ever found them so we had hoped to locate them here by screening and we did. Other additions to the mollusk list we re t he Po in ted Macoma , Macoma inquinata (Deshayes, 1855); Lined Chiton, Tonicella lineata (Wood, 1815); Plate Limpet, Lottia scutum (Rathke, 1833) (on the pier); Baltic Macoma, Macoma b a l t h i c a ( L i n n a e u s , 1 7 5 8 ) ; C a l i f o r n i a S o f t s h e l l - C l a m , Cryptomya californica (Conrad, 1837) and a c rabbed S i tka Periwinkle, Littorina sitkana Philippi, 1846. No live shells of the last three species were observed. Near the end of the trip we dug a

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Ann and Tom

Lillian and Linda

Beach screening in progress From left to right - Susan, Tom, Katherine, Jane, Bert

Macoma yoldiformis

Katherine holding a flatworm

few live mollusks from the muddy beach and looked at them closely. Lillian was especially interested since she hadn’t done that before. We managed to dig a very large Pacific Gaper, Tresus nuttallii (Conrad, 1837), a Basket Cockle, Clinocardium nuttallii (Conrad, 1837) and an Eastern Softshell Clam, Mya arenaria Linnaeus, 1758. After we finished our time on the beach and the tide was returning, we had a wonderful potluck with hamburgers, fresh strawberries, salad and watermelon on the deck. Thank you to the Roalkvams for all the memories and yummy food.

Intertidal Monitoring Event at Point Whitehorn, Birch Bay, Whatcom County By Linda Schroeder

I recently attended my first intertidal monitoring survey at Point Whitehorn and it was a blast. Point Whitehorn is at the southwest end of Birch Bay in Whatcom County and is part of the Cherry Point Aquatic Reserve. One of our newest members, Michael Kyte, had, at recent meetings, described the intertidal monitoring events at which he was a frequent volunteer citizen scientist. It sounded intriguing and some of the sites are very near where I live. On June 5th I was able to participate in my first one. There are several intertidal monitoring programs throughout Puget Sound and north to Whatcom County. These programs are run by various Citizen Stewardship Committees. They help monitor the aquatic reserves which were established by the Washington Department of Natural Resources. The purpose of the annual monitoring is to establish a baseline and document changes. Michael will further describe what this is all about during his program at our September meeting. I wasn't sure what to expect when I arrived since I had been unable to attend the training days which occurred earlier in the year. By the time I reached the site, nearly three hours ahead of low tide, many of the volunteers had already been there for an hour. They had stretched a measuring tape in a line from the highest point on the beach to the water and set flags marking a 20 meter swath down the beach. These were also divided into sections which essentially marked the very high intertidal, high intertidal, mid intertidal, and so on. The goal was to document every species that was seen in each section. This included plants and animals. The volunteers worked in teams, with one person acting as the scribe, checking off the found species on prepared sheets. For the broader sections, it was only necessary to indicate that a species had been seen, live of course. Crabbed and dead shells were not counted, except to count the hermit crabs inside the shells. For this portion of the surveying, it was very much like what many of us already do at the beach - noting every mollusk species we see. The

difference is they noted everything, not just mollusks. In addition, at the +1, 0.0 and -1 ft lines, four small quadrats were placed and in these it was necessary to count each individual specimen or percentage of coverage for plants or encrusting organisms. The array of volunteers seemed to come from a wide variety of backgrounds and agencies. Several people had specific expertise, such as plants, worms, crustaceans; and I was there to provide the mollusk expertise. There were also some who were just learning. It was a mix very much like our own club, from the professional biologist to the enthusiastic beginner. Teams were assigned specific zones or quadrats to survey with a few experts wandering between the groups to help with identifications. I was one of the wanderers and

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Surveyors working their way down the beach. Member, Michael Kyte, on right.

Linda Schroeder photos

Teams counting species in the small quadrats

would come when called. For those who have been on a field trip with me, doesn't that sound familiar! When I wasn't needed, I would simply wander the sections looking for different species and double-checking that what I saw had been checked off on the appropriate list. It was quite a thorough survey since we were restricted to a specific swath of beach, but it wasn't limiting. It was a treasure hunt to make sure you found every species in each section. It was a very enjoyable day. This was aided by the fact it was sunny and hot. The light breeze off the water kept the otherwise hot day very tolerable. We worked until the tide had turned and by then had completed the survey. I gathered that this isn't always the case. Sometimes the length of the beach makes it nearly impossible to complete the survey before the tide is covering it all back up. Another bonus to participating was I was able to add three species to our Birch Bay list. We located the Mask Limpet, several Lined Chitons, and a Turbonilla species, which was occupied by a hermit crab and was too worn to identify the species. We also found a small Sunflower Star which is the first of that species I've personally seen in nearly three years, not since the sea star wasting disease had eliminated them from most locations. We saw young specimens of several other sea star species as well. I had also purposely parked down at the state park and walked the length of the beach to reach the Point. I'd hoped the tide wouldn't have completely returned before I headed back and I could wander the sandbars and eelgrass. This turned out to be the case and on my way back I came across some tide pools just riddled with the opisthobranch, Aglaja ocelligera (Bergh, 1894). There were at least a couple of hundred present. I have seen them at this beach before, but never in this kind of quantity. Birch Bay never fails to surprise me. It was a great day and one I hope to repeat. I definitely plan to participate in more of these monitoring surveys, starting with the next good low tide!

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Linda Schroeder photo

Spotted Aglaja, Aglaja ocelligera, were abundant in tide pools

Richard Longfelder photo

May Program Recap by Richard Longfelder Ric Brewer of Little Gray Farms presented an informative program on snail farming (Heliciculture) and described the small farm he operates in Quilcene near Hood Canal and the techniques he uses. He talked about the challenges of producing quality fresh snails for local restaurants and his plans to grow his business and create a trade organization to promote acceptance in mainstream cuisine. Due to USDA regulations, the development of this food industry here in the U.S. has been limited so far, unlike in Europe where snails or escargots are a popular item on menus and it is an established and vibrant industry with a long history, providing an excellent source of protein.

June Program Recap by Richard Longfelder A small group of members met for the Summer potluck and all e n j o y e d t h e f o o d , company and various stories that were told.

Richard Longfelder photos

Range Extensions During El Nino Events by Linda Schroeder New northern sightings of nudibranch species have been abundant during the 2015-2016 El Nino event. These sighting have been reported through a number of channels, including our own newsletter. While in contact with nudibranch specialist, Jeff Goddard, about some of these occurrences, he suggested we create a website page dedicated to recording these sightings, to help consolidate this information into one readily accessible source. We will begin with nudibranchs as these are typically the first to be noticed when the warm water currents carry southern species northward. There are several species which are noted to have ranges extending to Washington and British Columbia, but they are really only sighted this far north during El Nino events. This is equally true of some which are only seen in Oregon or even parts of California during these warm water fluctuations. Our new page will not be restricted to the Pacific Northwest. We will include the entire west coast. For this new page, we will need your help. In 2015-2016 if you have spotted any species, not just nudibranchs, which are north of their documented range, please pass this information along to us. Also include any species which is rarely seen at the northern end of its documented range, as the northern sightings may be coinciding with El Nino events. Basically, if you routinely visit an area and never see a particular species, but it was there this last year, we are interested. We will work to determine if this is a warming event occurrence or simply the random wanderings of a particular critter. Please include multiple sightings also. For example, if you spotted a particular nudibranch species in multiple locations during this latest warming event, or at multiple times, please note each occurrence. We may be able to track patterns. Please include as much information as you can. Ideally we would like to post a detailed location (exact beach or dive site), the date, who observed the sighting, and if possible, a photograph documenting the sighting. Also include any other observations if you have them. For example, was it a single individual, a few or several? In one sighting last year by Jackie Hildering, several Spotted Dorid, Triopha maculata MacFarland, 1905, were not only found on the north end of Vancouver Island at Port Hardy, BC, another jump in its range, but they were also laying eggs. We'll include as little or as much information as we have for each sighting. Once we have the latest El Nino event covered, we can expand into previous El Nino years. Feel free to forward past information right away if it's handy. Also, please pass this request along to anyone else you think may have a relevant observation to report. All information can be sent to Linda Schroeder at PNWSC60@gmail.com And thank you in advance for your assistance with this project!

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Sue Jeffrey photo

There were nudibranchs everywhere on Tsulquate beach and some found inside dead clam shells appeared to be laying eggs. That is how Sue Jeffrey described what she saw on June 6th when she was exploring that beach. Tsulquate beach is in Port Hardy at the northern end of Vancouver Island. Sue had seen the nudibranch on the same beach during the May low tide but this time there were just more of them. Not knowing how to separate the two Hermissenda species, H. crassicornis and H. opalescens, she photographed them and forwarded the pictures for identification. They turned out to be H. crassicornis both times. - George Holm

Two Hermissenda species and a trip to Oregon to find them By Linda Schroeder Early this year a paper was published which reported that the Opalescent Nudibranch, Hermissenda crassicornis (Eschscholtz, 1831) is actually three separate species. It is titled "The Model Organism Hermissenda crassicornis (Gastropoda: Heterobranchia) Is a Species Complex" by Tabitha Lindsay and Ángel Valdés and is readily available online through PLOS ONE at http://dx.doi.org/10.1371/journal.pone.0154265. The name Hermissenda crassicornis is retained for the Pacific Northwest species as it was originally described from Alaska. It ranges from northern California to Alaska. Hermissenda opalescens (Cooper, 1863) is reinstated as the name for the southern species, ranging from the Sea of Cortez to northern California. The northwest Pacific species returns to Hermissenda emurai (Baba, 1937). While all three are very similar, which is the reason they had all been synonymized for many decades, there are some consistent differences which can separate them in the field. For our local purposes, we mainly need to distinguish between H. crassicornis and H. opalescens. There are color variations among each species which likely relates to what it has been eating, but H. crassicornis exhibits a white stripe down its cerata which H. opalescens does not. This is the easiest way to distinguish between them. I have personally noticed on some specimens with dark cerata in northern Washington, that the white line can be a little harder to spot as it may be very thin and intermittent. The exact range for each species still needs to be clarified. Naturally, once this paper was published, many people began to review their specimens and photos to see which species they actually had. Recent reports of H. opalescens in Oregon immediately cropped up. The paper does mention this species as being present through Oregon in one paragraph, but in others lists northern California as the northern extent. I already had a trip planned to the Oregon coast for the May low tides so I looked forward to trying to find it myself. On May 8th and 9th I met up with member, Tara Maginnis, and her group of graduate students who were exploring the central Oregon intertidal zones. I met them at Seal Rock the first day and Strawberry Hill the second. They were specifically hunting nudibranchs and with that many eyes looking, they turned up multiple specimens of H. crassicornis and H. opalescens at both locations. We can readily conclude that H. opalescens reaches into Oregon. However, since all the recent observations have occurred during the recent El Nino, I am not sure if this is normal or if they are present due to the warming event. I look forward to hearing if others have reports of H. opalescens in Oregon from non-El Nino years.

Cuspidaria tomricei, new species named for club’s founder by George Holm

Tom Rice, has been honored with having a new species of Cuspidariidae named for him. Cuspidaria tomricei Poppe and Tagaro, 2016, was discovered in 250 meters off Mactan Island, Punta Engaño, the Philippines. Size (Holotype): Height = 4.5 mm; width = 6.3 mm. It was described in Visaya Vol. 4, No. 5, 2016. The photos are of the Holotype and are used here with permission of Philippe Poppe.

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Left photo: - Hermissenda crassicornis at Strawberry Hill, just south of Yachats, OR (about 20mm) Right photo - Hermissenda opalescens at Seal Rock, just north of Waldport, OR (about 35mm)

© Linda Schroeder photo© Linda Schroeder photo

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© Rick Harbo photo

© Karin Fletcher photo

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1. This Candy Stripe Shrimp, Lebbeus grandimanus (Bražnikov, 1907), was found at the Keystone Jetty, Whidbey Island, WA on May 31st by Jan Kocian. Jan frequently dives this location and commented that he had never seen this species at that site before.2. Greg Jensen spotted this Lined Chiton, Tonicella lineata (Wood, 1815), with the unique markings at Burrows Island in Anacortes on June 5th.3. Karin Fletcher commented that she seems to be seeing more Scaleworms on Piddocks this year than she has in the past. This Red-banded Scaleworm crawling on a Piddock was photographed on June 11th in Rich Passage, near Port Orchard, WA. 4. Spotted by Linda Schroeder at Strawberry Hill in Oregon May 9th, This cute little fish is likely the Tidepool Snailfish, Liparis florae (Jordan & Starks, 1895).5. Rick Harbo caught this Mottled Star Evasterias troschelii in the act of eating a Green False-Jingle, Pododesmus macrochisma while in Ucluelet Harbour on April 9th.

© Greg Jensen photo2© Jan Kocian

© Linda Schroeder photo4

4. Another El Nino related range extension - this White-spotted Dorid, Doriopsilla fulva,(MacFarland, 1905) was photographed at Cape Arago, Oregon on June 5th by Tara Maginnis. Large numbers were found in northern CA and southern OR in early June 2016 by a survey team which included Tara. Jeff Goddard and Nancy Treneman collected specimens which were sent to the California Academy of Sciences as vouchers. This species was recently separated from D. albopunctata (J.G. Cooper, 1863) as a distinct species.5. Jeff Goddard photographed this Rabbit Dorid, Crimora coneja Marcus, 1961, with eggs at Cape Arago, OR on June 5th. This is the northern limit of this species.

Shelling in the local Asian markets - Neverita duplicata found for sale in Richmond by George Holm Checking on what molluscs are in the live tanks at the many Asian markets in the Vancouver B.C. area can sometimes be rewarding for we collectors. So it was for Eric Ko, who at the end of May found Neverita duplicata (Say, 1822) at a market in the Vancouver suburb of Richmond. A lucky find since Naticidae just happens to be Eric’s favorite family of shells. Neverita duplicata is a North Atlantic species and is found from Maine to the Gulf of Mexico. The snails were selling for $5.99 per pound and Eric reported that there were very few in the tank that did not have a chipped lip.

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Eric Ko photos

54© Tara Maginnis photo

© Jeff Goddard photo

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August 2016 Oral Auction

BooksAustralian Marine Shells, 2 Vol. setA Collector's Guide to Seashells of the WorldManual of the Living Conidae: Indo PacificSeashells of Eastern Arabia

Coral - 3 varied specimensCollection of 20 California species, w/oPurple Urchin test 138mmSawfish "saws" 410mm & 890mm

Achatinella apexfulva (Dixon, 1789) 18mm, sinistral; Achatinella apexfulva (Dixon, 1789) 18mm, dextralAchatinella diversa Gulick, 1856 17mm, sinistralAchatinella lorata (Ferussac, 1824) 15mm, albino; 15mm, bandedAchatinella mustelina Mighels, 1845 20mm, sinistral; 19mm, dextralAchatinella pulcherima Swain., 1828 17mmAchatinella rosea Swainson, 1833 20.5mm, sinistralAchatinella splendida Newcomb, 1853 20mm, sinistral 1Achatinella stewartii Green, 1827 24mm, sinistralAmaea magnifica (Sowerby, 1844) 100mmAstele bularra (Garrard, 1961) 24mmAstraea undosa (Wood, 1828) 114mm, w/oBabelomurex japonicus (Dunker, 1882) 48mmBassina disjecta (Perry, 1811) 60 & 66mmBuccinum leucostoma Lisch., 1872 99mm, w/oBuccinum tenuissimum Kuroda, 1933 143mmCalliostoma legrandi (Ten.-Woods, 1876) 26mmCallista erycina (Linnaeus, 1758) 80mmCassis cornuta Linnaeus, 1758 265mm, 265mmCassis madagascarensis (Lam., 1822) 193mmChama macerophylla Gm., 1791, on coralCharonia tritonis Linnaeus, 1758 438mmConus gloriamaris Chemnitz, 1777 66mmConus leopardus (Roding, 1798) 165mmConus maldivus Hwass, 1792 56mm, freakConus tiaratus (Sowerby, 1833) 36mmCymatium parthenopeum Salis, 1793 165mmCypraea aurantium Gmelin, 1791 92mmCypraea bregeriana Crosse, 1868 27mmCypraea cervus Linnaeus, 1758 107mmCypraea friendii Gray, 1831 71mmCypraea friendii vercoi Schilder, 1930 72mmCypraea guttata Gmelin, 1791 63mm  2Cypraea hesitata beddomei Schil., 1930 59mmCypraea hirasei Roberts, 1913 31mmCypraea hungerfordi Sowerby, 1888 35mmCypraea mauritiana Linnaeus, 1758 84mmCypraea pantherina Lightfoot, 1786 52mm, melanisticCypraea rabaulensis Schilder, 1964 22mmCypraea reevei Sowerby, 1832 39mmCypraea teuleri Cazenavette, 1846 47mmCypraea thersites (Gaskoin, 1849) 66mm, very darkCypraea tigris schilderiana Cate, 1961 108mmCypraea turdus winckworthi Schilder & Schilder, 1938 44mm

Cypraea venusta sorrentensis Schil., 1963 56mmDistorsio decussata Valenciennes, 1833 74mmDrillia albicostata (Sowerby, 1834) 21mm, GalapagosEpitonium friabilis (Sowerby, 1844) 17mmEpitonium sawamurai Azuma, 1960 21mmEpitonium scalare (Linnaeus, 1758) 61mm w/oHaliotis cracherodi Leach, 1814 140mm, polishedHaliotis midae Linnaeus, 1758 109mmHaliotis roei Gray, 1827 growth series, 77mmHemifusus kawamurai Habe, 1965 140mmLaevicardium elatum (Sowerby, 1833) 160mmLambis chiragra (Linnaeus, 1758) 274mmMarginella bullata Born, 1778 43mmMarginella denticulata Link, 1807 28mm 3Marginella lilacina Sowerby, 1846 23mmMarginella pringlei Tomlin, 1947 103mmMarginella collection, 5 species from SenegalMizuhopecten yessoensis (Jay, 1857) 172mmMitra mitra (Linnaeus, 1758) 126mmNautilus pompilius L., 1758 150mm,177mmNautilus macromphalus Sowerby, 1849 89mmNeritidae collection, 12 speciesPapuina pulcherrima (Rensch, 1931) 38mmPartulina rufa (Newcomb, 1853) 22mm, sinistralPatella mexicana Brod & Sow, 1829 165mmPinctada sp. (Pearl Oyster) 193mmPtychosyrinx chilensis Berry, 1968 40mmSpondylus sinensis Schreiberg, 1973 orangeStrombus gallus Linnaeus, 1758 148mmSyrinx aruanus (Linnaeus, 1758) 425mmTridacna gigas (Linnaeus, 1758) 328mmTridacna squamosa Lamarck, 1819 195mmTrisidos semitorta Lamarck, 1819 91mm, 93mmTurbo canaliculatus Hermann, 1781 70mmTurbo jourdani Kiener, 1839 150mm, w/oTurbo marmoratus L., 1758 135mm, 171mm 4

MurexChicoreus cornucervi (Rod., 1798) 80mm w/oChicoreus palmarosae (Lamarck, 1822) 93mmChicoreus ramosus (Linnaeus, 1758) 228mmHomalocantha anatomica (Perry, 1811) 55mm, w/oMurexiella vittata (Broderip, 1833) 25mm, GalapagosTyphis clarki Keen & Campbell, 1964 25mm

VolutesAdelomelon ancilla (Lightfoot, 1786) 132mmAmoria benthalis McMichael, 1964 34mmCymbiola magnifica (Gebauer, 1802) 203mmMelo aethiopicus (Linnaeus, 1758) 228mmMelo broderipii (Griff.&Pidg.,1834) 148mmOdontocymbiola cleryana (Saus., 1856) 54mmVoluta musica Linnaeus, 1758 78mm, 83mm 5Voluta virescens Lightfoot, 1756 79m

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