Life in the Lagoon
The lagoon is the relatively shallow water that lies between the edge of the island and the coral reefs. The average depth of water in the lagoon is about 9 - 12 ft (3-4 m). The lagoon floor is made up of coral sand, with some rocks and small coral heads. The lagoon is edged by the coral reefs, beyond which lays the vast expanse of the deep ocean.