A coastal-pelagic, semi-oceanic shark, found close inshore and well offshore, over the continental shelves, island terraces, and in passes and lagoons. Nomadic and migratory. Feeds on small bony fishes, crabs and squid, also on other sharks, rays, and lobsters. Viviparous, with 13 to 38 young in a litter. Size at birth 50 to 70 cm. Potentially dangerous. Meat utilized for human consumption, liver oil for vitamins, fins for soup, and hides for leather.