Blue Devil Cave

Best months: Jan–Mar

Protected Area

Bushrangers Bay

Why dive here

With 199+ marine species recorded in the area - including blue sharks, bull sharks, dolphins, dugongs and great white sharks - Blue Devil Cave offers some of Sydney & New South Wales's richest reef diving. Water ranges 18-23°C, warmest January, February, March.

Best timeJan–Mar

WetsuitA 3mm full wetsuit

Marine lifeBlue Sharks, Bull Sharks, Dolphins, Dugongs and Great White Sharks · 199+ species recorded

Water18-23°C · warmest January, February, March

CharacterReef dive

StandoutExceptional marine biodiversity

Blue Devil Cave is a solid shore dive, and one we find ourselves returning to when the conditions align. You’ll gear up at ‘The Gutter,’ a pretty straightforward entry point, before a short surface swim out. The cave itself isn't huge, more a deep overhang really, but it's where we consistently find those striking blue devilfish. They are so bold, often just hanging out, letting you get a good look at their electric blue and orange markings. Beyond the main stars, we've spotted pipehorses tucked into the kelp and even a frogfish or two if you've got a sharp eye. The max depth is around 22 meters, so there’s plenty of bottom time to explore the surrounding reef. Visibility usually hovers around 9 meters, which is decent for the area. It’s a great spot for macro enthusiasts, but the main draw is definitely the chance to spend some quality time with the resident blue devils. It’s a dive that rewards patience and a keen eye for the smaller stuff.