Convict Surgeonfish swim around Tubbataha Reef's South Atoll, which was damaged by ship grounding this year. In celebration of World Oceans Day today, the Worlds Wide Fund for Nature-Philippines released this photo to show how the grazing of the Convict Surgeonfish, named for their scalpel-like extensions, keeps algae from taking over the freshly exposed corals, allowing scars from the ship grounding to heal.

Healers of Tubbataha. (2013, June 8). The Philippine Star, p. 2.