noun
Mactra veneriformis; trough shell
A species of bivalve mollusk; the name is usually written in katakana as シオフキガイ.
シオフキガイは潮干狩りでよく見つかる貝の一種です。
The Mactra veneriformis is a type of shell commonly found during clam digging.
The name シオフキガイ (潮吹貝) literally means 'tide-spouting shell', referring to the way the clam squirts water when disturbed. The exact historical derivation is uncertain.