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Reddish-brown crab. Never seen a shell so textured so I’m not sure if it’s due to age or species. Some friends suggested a type of box crab, but it’s not as gnarly as some of the photos I’ve seen. We untangled him from a net that we removed from a shipwreck site in North Carolina - The Caribsea. Docked in Swansboro, NC.

Clionella sinuata is a snail with a dark brown shell, apex often eroded. Whorls are flattened and with about 16-18 coarse ribs across the last turn. Aperture with a short anterior canal and a slight bend or notch in outer lip.

This scavenger, found under loose rocks in sandy areas, congregates to lay masses of purse-shaped egg cases under boulders, like depicted in the picture.

Found in a rock crevice on the rocky shore in Jacobsbaai, in front of Weskusplek Restaurant.

Photo license and credit belong to the Florida Museum of Natural History (FLMNH) and University of Hong Kong's Swire Institute of Marine Science | This observation is a part of the collaborative work between FLMNH, the Smithsonian Institution's Marine Global Earth Observatory (MarineGEO) and Tennenbaum Marine Observatories Network, the Smithsonian's National Museum of Natural History, and University of Hong Kong's Swire Institute of Marine Science

A 122 cm SL long Largetooth Conger trawled at a depth of approximately 1000 m, by fishing vessel Rubicon, off Babel Island, Tasmania, April 2002 (AMS I.41361-001).

Images of fresh fish courtesy of Ian Merrington, NSW DPI. Images of preserved fish courtesy of Stuart Humphreys, Australian Museum.

See https://australianmuseum.net.au/largetooth-conger-bathyuroconger-vicinus

Middleton Point at low tide. River Murray flood waters have resulted in large number of dead fish, bivalves and other marine invertebrates washing onto the beach. The bivalves and marine invertebrates normally inhabit the littoral sand zone but could not survive the large influx of Murray water into the ocean.

Shell about 3.5 mm long; found crawling on algae in a low intertidal pool at McKenney Point, Cape Elizabeth.

See:
Ohnheiser & Malaquias (2014. The family Diaphanidae (Gastropoda: Heterobranchia: Cephalaspidea)
in Europe, with a redescription of the enigmatic species Colobocephalus
costellatus M. Sars, 1870. Zootaxa 3774 (6): 501–522.) Available from: https://www.researchgate.net/publication/260684868

https://opistobranquis.info/en/guia/cephalaspidea/cylichnoidea/diaphana-minuta/