The Derawan Islands (Indonesian: Kepulauan Derawan) are in the province of East Kalimantan in Indonesia. They include Derawan, Sangalaki, Kakaban, Maratua, Panjang, and Samama Island and submerged reefs and islets. They are located in the Sulawesi Sea, on the coastal shelf of East Kalimantan (2°17′N - 118°13′E). The islands are part of the Berau Regency.
Derawan islands is a part of Coral Triangle, which contains one of the richest marine biodiversity on earth. Located in a biodiversity hotspot, the Derawan Islands feature 872 species of reef fishes, 507 species of coral, and invertebrates, including protected species (5 giants clam species, 2 sea turtles, coconut crab, etc.). Some of the islands harbor the heavily exploited turtle eggs and yet the largest green turtle nesting site in Indonesia.
Derawan Islands have at least two ponds contain unpoisoned jellyfish, one in Kakaban Island and the other in Maratua Island with Haji Buang Pond. Kakaban is more famous than the second which is also more difficult to access. Indonesia at least have 7 ponds with unpoisoned jellyfish, the others are 3 ponds in Raja Ampat, West Papua, one in Togean Island, Central Sulawesi and one in Rote Island, East Nusa Tenggara.