カワニナ

noun

freshwater black snail; marsh snail

A small freshwater snail native to East Asia, often found in clean streams and rivers. Semisulcospira bensoni is a specific species, but the term may be used broadly for similar snails.

• カワニナはきれいな川かわにすんでいる。

  Freshwater black snails live in clean rivers.

• ホタルの幼よう虫ちゅうはカワニナを食たべる。

  Firefly larvae eat freshwater black snails.