Large sharks inhabiting the upper ocean are occasionally found in coastal waters and have been reported in estuaries. Generally, they move on the surface of the water, the pectoral fin develops, and the upper leaves of the dorsal fin and caudal fin will emerge from the water and swim slowly. Fierce and active, it is dangerous to take the initiative to attack people. It mainly feeds on bony fish, crustaceans, cephalopods, marine mammals, turtles, seabirds and oceanic crabs.