Scalloped Hammerhead

The scalloped hammerhead shark has the distinctive “hammer” shaped protrudences common to the hammerhead shark family. Its name comes from a deep indentation in the center of the “hammer”. The width of their “hammer” is 20 to 30 percent of their entire length. The are usually a brownish gray dorsally shading to white ventrally.

They are generally non-aggressive towards humans but should be left alone. Like all sharks, they have a cartilaginous skeleton and rough skin. The eyes of the scalloped hammerhead are located on the ends of its “hammer”. This gives them a better visual range than most sharks. The “hammer” also seems to be a sensory device.


Scalloped hammerheads feed on cephalopods (squid), fish, crustaceans, and turtles.


Scalloped hammerhead sharks are found worldwide in temperate seas. They are usually found in deep water but it is not uncommon to find them closer to shore.

Social Structure

Young scalloped hammerhead sharks live in large schools. Adults can be found in large schools, in pairs, or alone. It is thought that they tend to come together in schools to pick mates. They also tend to congregate when they are migrating from one area to another.

Birth & Offspring

Scalloped hammerhead sharks give birth to live young. The young hammerheads usually live in shallow water nurseries with other young sharks.

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