Dive-site story
Located off the southern tip of South Solitary Island within the Solitary Islands Marine Park, South Boulder features a landscape of massive granite monoliths, deep gutters, and rocky overhangs. Swept by the convergence of the warm East Australian Current and cooler southern flows, this offshore site supports a remarkable mix of tropical and temperate species. Divers navigate through deep crevices where grey nurse sharks often cruise or shelter alongside resident wobbegongs and large schools of pelagic fish.
Congregations of grey nurse sharks resting in gutters and cruising along boulder walls
Expansive underwater topography with dramatic swim-throughs and granite overhangs
Encounters with eastern blue gropers, bull rays, and occasional summer manta rays
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Warmer water and manta encounters peak during summer and autumn, while winter and spring bring the highest grey nurse shark numbers.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grey Nurse SharkCarcharias taurus | Common | ||||||||||||
| Spotted WobbegongOrectolobus maculatus | Common | ||||||||||||
| Eastern Blue GroperAchoerodus viridis | Common | ||||||||||||
| Black CodEpinephelus daemelii | Seasonal | ||||||||||||
| Reef Manta RayMobula alfredi | Seasonal | ||||||||||||
| Green Sea TurtleChelonia mydas | Common |
Marine forecast
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