Before Hurricane Luis struck, wire corals and a deep sea fan grew in the Potato Hill reef in only 20 feet of water. These coral species are found normally in deep water. The wire corals disappeared after the hurricane, the deep sea fan is growing back. A stand of bushy black coral can still be seen in only ten feet of water. A large pillar coral has survived all storms.
Little Bay has sandy bottom.
However, its north shore consists of boulders that had dropped from Rendezvous Bluff . These boulders used to be a major breeding ground of fish and other sea creatures. Now, this reef became a busy sea port that threatens the ecology of the whole bay including the Potato Hill Reef. One highlight of diving at Rendezvous Bluff is the bat cave dive. On the West face of the cliff is the partly submerged opening of a cave.