The harness-like markings across the body and eyes and the spine in both dorsal fins are what you can use to know the Port Jackson Shark (Heterodontus portusjacksoni). This is in addition to its ability to eat and breathe simultaneously, unlike other sharks. It is named after Port Jackson in Australia. This is where it is commonly found. It belongs to the bullhead family, nocturnal, oviparous, and migratory. You may also hear other people call it pigfish, horn shark, or oyster-crusher. The head is large, blunt, with a prominent crest above the eyes. This medium-sized shark has a small mouth and a light grey-brown body. It feeds on sea urchins, crustaceans, and fish.