Port Jackson Shark (Heterodontus portusjacksoni). Illustration: R. Aidan Martin

Bullhead Sharks attract very un-shark-like descriptions: cute, clumsy, charming, comical. These adjectives derive not only from the appearance of Bullhead Sharks, which is chubby with features that are part pig and part bull, but also their movement. They wiggle as they swim and are generally inelegant.

Bullhead sharks get their name from their large heads with a heavy brow over their eyes. They have stubby snouts and short mouths. There is a groove running from their nostrils to their mouths. They live around rocky reefs in the Pacific and Indian Oceans, eating crustaceans, sea urchins and mollusks.