Terrains at Derawan are varied-from walls and fringing reef to caverns.
Big green turtles (chelonia mydas), whitetip leopard and nurse sharks,
schooling barracudas, napoleon wrasses, cuttle fish, spanish mackerel,
jacks and batfishes, and ornamental reef fishes hang out in record
densities and diversity.
Dr. Carden Wallace
of the Museum of Tropical Queensland found over 50 species of Acropora
hard coral on one reef.