water boatman

Any of various aquatic insects of the family Corixidae that have paddle-shaped hind legs used for swimming.

Japanese Meaning

パドル状の後脚を持ち、水の中で泳ぐための水生昆虫（コリキシダ科に属する）

At dusk, I watched a lone water boatman glide beneath the pond's surface, its paddle-shaped hind legs beating rhythmically.

夕暮れ時、私は池の表面下を滑るコリクス科の水生昆虫を一匹見つめ、その櫂状の後脚がリズミカルに動いていた。

Sense（1）

Any of various aquatic insects of the family Corixidae that have paddle-shaped hind legs used for swimming.

water boatmen

（ plural ）