Alex Mustard -
A school of gigantic bumphead parrotfish (Bulbometopon muricatum) moving down a reef wall in the morning. These enormous fish are key stone species in the coral reef ecosystem, as they graze on hard coral, crunching down their favourite species and promoting coral diversity.
Location: Sipadan Island, Sabah, Borneo, Malaysia.
Tags: Alex Mustard, coral reef, Malaysia, marine life, underwater