The coral reefs of Sebangkat present
some good snorkeling opportunities and some large rays
and sharks can be seen at Pulau
Sibuan. This exhibits the wide range of species
diversity that the Island is famous for. This is the
region where Pacific and Indian Ocean biospheres meet.
The diverse population of corals supports hundreds of species of colourful coral dwelling fish and invertebrates and are intermingled with several species of molluscs including giant clams. Octopus can also be found here. Sponges and crinoids are found intermingled with corals or near coral patches and so are several species of marine algae (seaweeds). In or near the habitats created by these one finds a wide variety of interesting creatures including photographers’ favourites such as nudibranchs, lionfish, shrimp, lobsters, anemones, anemone fish, sea horses and a host of others. Diving activity is year round in Sipadan and sea surface temperatures are generally in the range of 25-30°C. Average visibility is in the range of 10-15 metres. Sea temperatures are at their lowest between November and February.