noun
A species of sea snail, Pleurotomaria beyrichii. Used in biological contexts.
オキナエビスガイは深海に生息する巻貝の一種です。
The Beyrich's slit shell is a type of sea snail that lives in the deep sea.
The name combines 翁 (okina, 'old man') and 恵比須 (ebisu, the god of fishermen), likely referring to the shell's appearance. The exact derivation is uncertain.