Dangerous Reef

Dangerous Reef is the southernmost reef in the St. John's group, a medium-sized, diamond-shaped reef. It is said that the name came about because sharks were often found sleeping in caves to the south of the reef. Despite its name, it is an ideal anchorage: 410 m long and 30 km from the mainland, it provides a safe berth for the night and is therefore very frequented by boats.

The reef has many crevices and breaks that divers swim through, as well as a cave system you can cross and large hard corals. There are coral gardens, reef passages and shallows with colourful fish, and turtles are common. On the northern tip is a coral garden with coral towers, where there is a good chance to see moray eels, turtles and blue spotted rays. Barracudas, trevally and jacks swim along the walls and in the blue, and nudibranchs and octopuses can also be found along the walls. The site is also good for afternoon dives, with some small caves and red anemones. It is excellent for night dives, when squid, Spanish dancers and hunting moray eels appear.

In the St. John's area, the best diving season tends to run from April to November, when the weather is warm and dry. Diving in the area is possible all year round, but spring and autumn tend to bring the calmest seas and the best chance of reaching the more exposed reefs.