An adult Pacific bullethead parrotfish (Chlorurus spiluris), off the reef on Kawe Island, Raja Ampat, Indonesia, Southeast Asia

An adult Pacific bullethead parrotfish (Chlorurus spiluris), off the reef on Kawe Island, Raja Ampat, Indonesia, Southeast Asia

An adult Pacific bullethead parrotfish (Chlorurus spiluris), off the reef on Kawe Island, Raja Ampat, Indonesia, Southeast Asia

Bullethead parrotfish (Chlorurus sordidus) swims in the open sea, Red Sea, Egypt, Africa

Bullethead parrotfish (Chlorurus sordidus), Marsa Shona reef dive site, Egypt, Red Sea, Africa

Bubble Coral (Plerogyra sinuosa) with Bullethead parrotfish (Chlorurus sordidus), Red Sea, Egypt, Africa

This female Bullethead Parrotfish (Chlorurus spilurus) turned to reveal its fused teeth which are used to scrape algae from coral heads. It was photographed while scuba diving the Kona coast, the Big Island, Hawaii; Island of Hawaii, Hawaii, United States of America

Terminal male Bullethead Parrotfish (Chlororus sordidus) photographed while scuba diving the Kona Coast, Island of Hawaii, Hawaii, United States of America