Sabuda island lies off the western tip of the peninsula, and is separated from the mainland by Berau and Bintuni straits.

There are smaller areas of montane rainforest in the Fakfak and Kumawa mountains along the peninsula's western edge.

There were trading relationships that formed based on birds of paradise feathers with 7th century Sriwijaya and the surrounding islands.

[5] The Dutch constructed Fort Du Bus in 1828 on Triton Bay in the current Kaimana Regency and formalised Tidore rule over this region (and Tidore's protectorate status under Netherlands) by appointing three local rulers Sendawan (King of Namatota), Kassa (King of Lahakia) and Lutu ("Orang Kaya" from Lobo and Mawara) under which many local kingdoms and tribes swear fealty.

[8] The Dutch colonial authorities began to govern more directly late 19th century with the ending of hongi fleets and slave trading of Tidore in 1850, followed by the agreement on 1872 with Tidore which made the Sultan explicit only had right on feudal matters, and the sovereignty if New Guinea rest in Dutch East Indies government, in practice allowed them to establish administrations in New Guinea.

[9] There are several Central–Eastern Malayo-Polynesian languages spoken on the Bomberai Peninsula, including Uruangnirin, Onin, Sekar, Arguni, Bedoanas, Erokwanas, Irarutu,[10] and Kowiai.

[14] Fauna of the Fakfak Mountains includes the black-eared catbird and Oninia senglaubi, a member of the family of the narrow-mouthed frogs (Microhylidae).