A pleasant but not outstanding site, with the greatest attraction lying not in the blue hole itself, but on the rich sloping reef outside.

Entry to the site is through a large lagoon in the reeftop, about 50m (164ft) across. This lagoon is the 'blue hole' which gives the site its name - it is in fact the top of a vertical shaft which is reported to extend over 300m (984ft) straight down. A shallow lip at about 6m (20ft) leads from the lagoon to the outer reef; deep within the hole, an arched passage also links the reef face to the hole itself.

The reef slope is quite rich in hard corals - particularly the reef section to the south of the lagoon, with acropora, brain and star corals - and to a lesser degree in soft corals.

Triggerfish, jacks, unicorns, parrotfish, angels, grouper and surgeonfish are all part of the variety of fish life on the outer reef. Within the lagoon, with its sparse coral growth, there is little marine life of any kind.

For safety reasons, divers are discouraged in the strongest possible terms from exceeding maximum depth limits in the blue hole.