water flea

Noun

Any of various aquatic crustacea of the order Cladocera, characterised by their jumping or jerky mode of swimming.

Japanese Meaning

クレードセラ目に属する、跳ねるまたはぎくしゃくした泳ぎ方を特徴とする各種の水生甲殻類。

A single water flea drifted across the sunlit pond, its jerky movements barely disturbing the smooth surface.

朝日に照らされた池を、ひとつのミジンコが漂い、そのぎこちない動きは静かな水面をほとんど乱さなかった。

Sense（1）

Any of various aquatic crustacea of the order Cladocera, characterised by their jumping or jerky mode of swimming.

water fleas

（ plural ）