Koyama also spelled Kwayama and Coiama is the second largest island of the Bajuni Islands archipelago in the Indian Ocean, situated only 1.5 km from the mainland coast of Somalia in Jubbaland state. It is 5.3 km long and up to two kilometers wide, and features a large bay or lagoon opening towards the mainland coast. At 6.38 km², it is almost equal in size toChula, which measures 6.40 km². Koyama island has two separate villages, Koyama and Koyamani. Koyama is rich in historic ruins and monuments such as pillar tombs. All Bajuni inhabitants of the island belong to the Nowfali sub-clan.