Fauna of New Guinea Guinea. However, the tree-kangaroos, which are mostly endemic to New Guinea, are different in appearance and behaviour. As suggested by their name, they are arboreal. They have long, thick tails which enable them to balance in trees, and large, strong forearms for gripping to trees. Two species of tree kangaroos are also found in Australia, they are believed to have migrated from New Guinea during the Pleistocene. The cuscus, family Phalangeridae, are a family of marsupials closely related to the possums of Australia. The cuscus have evolved in New Guinea, and are found throughout the island. Most species are dark
Geography of Papua New Guinea divides the island of New Guinea. Across the 820 km (509 mi) border, the western half of New Guinea is officially known as Papua province, governed by Indonesia. Papua New Guinea's border with Indonesia is not straight; the border loops slightly to the west in the south-central part of New Guinea. Papua New Guinea's Western Province contains that loop. There are maritime borders with Australia to the south and Solomon Islands to the southeast. Papua New Guinea has a total area of 462 840 km², of which 452 860 km² is land and 9 980 km² is water. Its coastline