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bullhead sharks, horn sharks, port jackson sharks
There are 9 species in this order in one family, Heterodontidae. The sharks in this order and family are 2-5 feet long and have big, broad heads; pig-like snouts; five pairs of gill slits; a stiff spine on both of their dorsal fins; and an anal fin. They have cone-shaped teeth in the front of their mouths and fat, grinding molars in the back of their mouths.
They are found in shallow water in the western and eastern Pacific Ocean and the western Indian Ocean. They eat small fish, crustaceans, and mollusks. Species include: the crested bullhead shark, the horn shark, the Japanese bullhead shark, the Mexican hornshark, the Galapagos bullhead shark, the zebra bullhead shark, and the port jackson shark.
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