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Derawan islands located in the Derawan Islands, District Derawan, Berau regency, East Kalimantan Island Derawan Unit morphology is even that topografi coastal plains. Beach sand has a slope gradient of 7 ° - 11 ° width 13.5 - 20 meters.

In the surrounding waters and the sea there is a park famous as a tourist dive (diving) with a depth of about five meters. There is a diverse marine biota here, including squid (cuttlefish), lobster, fish, pipe (ghostpipe fish), octopus (octopus bluering), nudibranchs, sea horses (seahorses), not ribbon (ribbon eels) and fish skorpion (scorpionfishes ).

In the coral reef at a depth of ten meters, there is a reef known as "Trigger Blue Wall" because of the reef with a 18 meters long is there are lots of trigger fish (red-toothed trigger fishes).