Tanjung Puting National Park has several ecosystem consists of lowland tropical rain forest, dry land forest, freshwater swamp forests, mangrove forests, coastal forest, and secondary forest. This area is dominated by lowland forest plants like jelutung (Dyera costulata), ramin (Gonystylus bancanus), meranti (Shorea sp.), Keruing (Dipterocarpus sp.), And rattan. Endangered species endemic and protected contained in the forest Tanjung Puting National Park include the orangutan (Pongo Satyrus), proboscis monkey (Nasalis larvatus), maroon leaf monkey (Presbytis rubicunda rubida), bear (Helarctos malayanus euryspilus), deer (Tragulus javanicus klossi), clouded leopard (Neofelis nebulosa), and cat (Prionailurus bengalensis borneoensis). Tanjung Puting National Park is the first location in Indonesia as an orangutan rehabilitation center. There are three locations for the orangutan rehabilitation namely in Tanjung Harapan, Pondok Tanggui, and Camp Leakey. The Borneo ora