whirligig beetle

Any of various water beetles of the family Gyrinidae that swim rapidly in circles when alarmed.

Japanese Meaning

警戒すると急速に円を描いて泳ぐ、水生の各種甲虫（科Gyrinidaeに属する）

A whirligig beetle skittered across the pond, drawing a series of glittering circles as it escaped the shadow.

ギリニダ科に属する水生甲虫が池の表面を走り、影から逃れるようにきらめく円をいくつも描いた。

Sense（1）

Any of various water beetles of the family Gyrinidae that swim rapidly in circles when alarmed.

whirligig beetles

（ plural ）