The Port Jackson shark has spines on each of its two dorsal fins. The anal fin is present in the Port Jackson shark.

The Port Jackson shark is brown in color and its back is covered with distinctive markings featuring a visible pattern of dark, narrow stripes resembling a harness. Its head is broad with a prominent brow.

The Port Jackson shark has an average length of around 4.3 feet but can reach a maximum size of 5.4 feet in length.

The Port Jackson shark is found in the waters of the western Pacific ocean along the coasts of Australia.

The Port Jackson shark lives on the continental shelf, in shallow coastal waters down to the intertidal zone, but it can also be found at depths of around 656 feet. It mainly inhabits sandy or rocky seabeds and sometimes takes shelter in rocky crevices. It spends most of the day resting motionless on the bottom and becomes active at night to search for prey.

The Port Jackson shark feeds on bottom-dwelling marine invertebrates, mainly sea urchins, as well as small crustaceans, sea stars, marine worms, gastropods, and bivalves. It also occasionally captures small fish.

The Port Jackson shark is oviparous. The female lays its eggs, around fifteen per year, which she deposits on the seabed. Carried by currents, they eventually become trapped in a rocky crevice. The embryos then develop inside the egg case for 9 to 12 months, nourished by the yolk sac, a true food reserve, before the young sharks hatch.

Young Port Jackson sharks reach sexual maturity when they are approximately 3.3 feet in length.

The Port Jackson shark is a shark species endemic to the coastal waters of Australia, particularly around the natural harbor of Sydney, Port Jackson.

The Port Jackson shark has an exceptionally well-developed sense of smell, allowing it to hunt at night in complete darkness for prey hiding in the sand!