Scuba diving the outside wall drop-offs at the Minerva Reefs is spectacular due to the superb water clarity and extensive coral, fish and other marine life. There are few suspended particles and the visibility is normally in excess of 100 feet due to there being no dry land at high tide. Of particular note are the numerous fan coral formations near the pass at North Minerva and the “shark bowl” area located by the narrow dinghy pass on the western lobe of South Minerva. Make sure you use a dive flag when diving near passes.The inside of the lagoon at South Minerva is also home to numerous giant clams. Divers at Minerva must be entirely self-sufficient, with their own compressor, and should also be aware that the nearest assistance is a multiple-day boat ride away in Tonga. Due to the vertical drop off and water clarity, divers must watch their depth carefully.
Information sourced from Wikipedia. Dive location marker approximate only.