Port Jackson Shark Spines

Pair of spines.


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The Port Jackson Shark (Heterodontus portusjacksoni) is a distinct species of bullhead shark, commonly found in the temperate waters off the southern coast of Australia. This species is known for its unique head shape and the harness-like markings across its body.

Key Characteristics of the Port Jackson Shark:

1. Appearance: The Port Jackson Shark has a blunt, pig-like snout and prominent ridges over its eyes, giving it a distinctive look. It's grey-brown in color, with black bands that resemble a harness across its back and sides.

2. Size: It is a relatively small shark species, with adults typically measuring about 75 cm to 1.65 meters (2.5 to 5.4 feet) in length.

3. Habitat: This species prefers rocky, sandy, and seagrass habitats in shallow, coastal waters. They are often found at depths up to 100 meters (330 feet).

4. Diet: The Port Jackson Shark feeds primarily on hard-shelled mollusks, crustaceans, sea urchins, and fishes. Its small, sharp teeth in the front and flat crushing teeth in the back are well-adapted for its diet.

5. Behavior: Known for being a nocturnal species, these sharks are generally docile and slow-moving. They are often seen resting on the sea floor during the day.

6. Reproduction: Unique among sharks, they lay spiral-shaped eggs, which they deposit in crevices of rocks. The young hatch after a period of about 10 to 12 months.

7. Conservation Status: The Port Jackson Shark is not currently considered threatened. It is often caught by recreational fishers but is not a primary target for commercial fisheries.

The Port Jackson Shark's distinctive appearance, especially its head shape and the harness-like markings, make it easily identifiable. Its docile nature and preference for shallow waters make it a popular species among divers and marine enthusiasts.

Heterodontus portusjacksoni

They measure 3.16" and 2.42"