The Togean Islands are one of the important coral reef ecosystems in the Coral Triangle, which spans across Indonesia, Malaysia, the Philippines, Papua New Guinea, Japan, and Australia. The reefs in the Togean Islands consist of four types: fringing reefs, barrier reefs, patch reefs, and atoll reefs. The Togean Islands are home to 38 species of coral that are part of the global coral triangle. Additionally, there are around 307 marine species living in this area. Togean also has an endemic coral species called Acropora togeannensis. Among the 19 islands in the archipelago, notable ones include Kadidiri Island, Papan Island, California Island, Carina Island, and Una-una Island.
