Grey Reef Shark

Grey reef sharks Carcharhinus amblyrhynchos frequent clear, deep waters down to 150 m (490 ft) on the seaward side of coral reefs. They can appear alone or in groups numbering 100 or more individuals. When feeding, these groups sometimes rush up from the depths, pinning schools of mullet and other reef fishes against the reef wall.

The grey reef shark is a particularly aggressive species with a threat display used against rivals, particularly when competing for food, or defending itself against large intruders such as tiger sharks. However they are not always aggressive to others of their own kind. They sometimes form schools that swim aimlessly back and forth along the reef or stake out deep-water channels between reefs. Females spend the day in a small core area of their home range, ignoring any prey that might swim by.