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Sydney marine life

Port Jackson shark

Named after Sydney Harbour itself, the Port Jackson shark is a blunt-headed, harness-patterned shark that spends its days resting on the bottom. Every winter they come back to Sydney’s reefs to breed.

  • Up to about 1.6 mSize
  • Winter to early springBest time
  • CommonStatus
A Port Jackson shark resting on a Sydney reef

Heterodontus portusjacksoni

Photo: Ben de Groot

What to look for

A brown-grey shark with a dark harness-like pattern and a ridge above each eye, resting on sand or under ledges, often several together. Look in crevices for their eggs too: spiral-shaped cases that the females screw into the reef.

Diving with them

Port Jackson sharks have small crushing teeth for eating sea urchins and shellfish, and they’re not a threat to divers. Still, don’t touch or grab them: leave them resting and watch.

Where to see it

Dive with us to see it

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All Sydney marine life →