Iyalin Gyrinidae na nufin rukunin ƙwaro na ruwa wanda aka fi sani da ƙwaro whirligig. Wadannan beetles suna da alaƙa da halayensu na musamman na yin iyo cikin sauri a cikin da'irar saman ruwa. Yawancinsu ƙanana ne, masu girma daga 1.5 zuwa 12 millimeters tsayin su, kuma suna da jikin jiki masu haske, masu launin duhu waɗanda aka baje da tsayi. Gidan Gyrinidae ya ƙunshi kusan nau'ikan 700, waɗanda aka rarraba a ko'ina cikin duniya, tare da mafi girman bambancin da aka samu a cikin wurare masu zafi.