Ecoregions of New Guinea

New Guinea, lying within the tropics and with extensive mountain areas, comprises a wide range of ecoregions.

These include rainforests, grasslands and mangrove.

New Guinea is in the Australasian realm, which also includes the islands of Wallacea to the west, the Bismarck Archipelago, Solomon Islands, and Vanuatu to the east, and Australia and New Zealand.

[1] Sea levels were lower during the Ice Ages, which exposed the shallow continental shelf and connected New Guinea to Australia into a single land mass.

[2] The oceans around New Guinea are part of the Central Indo-Pacific marine realm.