David Hall / Yellow tangs (Zebrasoma flavescens) and Brown surgeonfish (Acanthurus nigrofuscus) cleaning a Green sea turtle (Chelonia mydas) at "cleaning station", feeding on alage on turtle's skin and shell,...

David Hall / Three Green sea turtles (Chelonia mydas) at a cleaning station with Brown Surgeonfish (Acanthurus nigrofuscus) waiting nearby, Big Island, Hawaii, Pacific Ocean. Endangered.

David Hall / RF - Green sea turtle (Chelonia mydas) at a turtle "cleaning station" being cleaned by Brown surgeonfish (Acanthurus nigrofuscus) and Yellow tangs (Zebrasoma flavescens), Big Island, Hawaii, Pacific O...