Dangerous Reef
Protected Area
Bassett Basin
Why dive here
With 113+ marine species recorded in the area - including dugongs, grey reef sharks, humpback whales, sea turtles and tiger sharks - Dangerous Reef offers some of Coral Sea's richest reef diving. Water ranges 25-30°C, warmest January, February, March.
Dangerous Reef, despite its rather dramatic name, is more thrilling than truly dangerous, though you do need to respect its currents. We’ve found the eastern side is often the sweet spot, particularly when the tide is coming in, bringing with it a clearer push of water. It’s a proper Coral Sea experience, feeling remote and untouched. The sheer wall drops away into the blue, and we’ve spent hours just hanging there, watching schools of giant trevally cruise past, often shadowed by a tawny nurse shark or two. What makes it special for us is that sense of wildness. You’ll be surrounded by fusiliers and damselfish, but the real show is the pelagics. We’ve spotted massive schools of eye-spot butterflyfish here, something you don't always see in such numbers elsewhere. Keep an eye out for Portuguese man o' war on the surface if you’re doing a drift; they’re pretty, but you don’t want to get tangled. This site really suits divers comfortable with some chop and who appreciate feeling like they're exploring somewhere truly off the beaten path.
Typical Dangerous Reef Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Reviews for Dangerous Reef
Conditions
Ocean conditions, forecast and tides for Dangerous Reef
Dangerous Reef Ocean Conditions
Monthly averages for Dangerous Reef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-16.5, 148) (0km away)
October Averages
Sea Temperature
26°C
79°F · Range: 25.4–29°C
Current Speed
10.3 cm/s
Direction: SE (119.1°)
Salinity
35.38 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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