Carcharias taurus · Lamniformes

Bushrangers Bay · Shell Harbour · NSW

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They look like something you should be afraid of.

Rows of jagged teeth visible even when the mouth is closed. Scarred skin. A heavy, deliberate way of moving through the water that feels ancient. If you've built your understanding of sharks from headlines, a grey nurse at close range would seem to confirm everything.

Then it swims past you. Slowly. Completely unbothered.

Bushrangers Bay is one of a handful of places along the NSW coast where grey nurse sharks aggregate — gathering in the gutters and caves of the reef in calm, predictable patterns. They return here because the bay offers what they need: shelter, structure, and relative stillness.

What strikes you most on the first encounter is not their size. It's their indifference. These are not animals that need to assert themselves. They move through the water with a patience that suggests they have been doing this for a very long time — which, as a species, they have.

Getting close to a grey nurse shark doesn't feel like a confrontation. It feels like a privilege.

Grey Nurse Shark
Grey Nurse Shark
Grey Nurse Shark
02
Population
A 2025 CSIRO study estimated approximately 1,420 adult grey nurse sharks on Australia's east coast — up from 1,096 in 2017. That's a five percent annual increase, driven by decades of legal protection.
03
Protection
Grey nurse sharks were the first sharks in the world to receive legal protection, in NSW waters in 1984. They are now listed as Critically Endangered on the IUCN Red List globally.
04
Reproduction
Grey nurse sharks reproduce extremely slowly — females give birth to just one or two pups every two years. This makes recovery from population decline a generational process, not a quick one.
Getting close to a grey nurse shark doesn't feel like a confrontation. It feels like a privilege
They were nearly wiped out because of how they looked.
For decades, grey nurse sharks were killed on sight — speared by divers, caught in nets, targeted because their exposed teeth made them appear dangerous. By the time protection came in 1984, the East Coast population had been devastated. Recovery has been slow. Grey nurse sharks produce very few pups, and those pups take years to mature. The latest research shows approximately 1,420 adults remaining on the East Coast, increasing at around five per cent a year. That's progress. But it's fragile progress. Cabbage Tree Bay is one of their key aggregation sites. When you dive here and see a grey nurse moving through the gutters of the reef, you are seeing an animal that nearly wasn't here at all. That changes how you look at it.
1,420
Adult east coast population (2023)
+5%
Annual population increase
1984
Year of first legal protection
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