noun
embossed venus; Venus toreuma
A species of saltwater clam. Scientific name: Venus toreuma. Typically written in katakana as マルスダレガイ.
マルスダレガイは潮干狩りで見つかることがある。
Embossed venus clams can sometimes be found during clam digging.
The name マルスダレガイ likely derives from 丸 (round) + 簾 (bamboo blind) + 貝 (shellfish), referring to the shell's shape and pattern. The exact historical derivation is uncertain.