The marine environment of the Kogatapu includes reef, lagoon, channel and ocean; and are home to many species of fish, corals, algae and invertebrates. Surveys prior to 1999 identified 76 species of indicator fish, 141 species of food fish and 149 mobile invertebrates such as crabs and sea cucumbers. A 2007 survey established that fish populations had increased as a result of the Funafuti Conservation Area. Large-sized individual fishes of the highly prized target food species, such as grouper and snapper were observed; the presence of so many large fish of desirable target food species indicates that there is very low fishing pressure in the Funafuti Conservation Area, although enforcement by conservation rangers of the no-fishing rules is necessary to preserve the fish stock.
