Sullivan New Guinea is home to one of the world's richest fauna. The two species of New Guinea monotremes are both spiny anteaters, or echidnas. And roughly 70 species of bats and 55 species of rodents make up some of the placentals.
New Guinea has both an estuarine or saltwater crocodile, as well as a freshwater one.
In rivers, the two live together. There are 170 lizard species, and 100 species of skink. Of the roughly110 species of snakes, including sea snakes, tree snakes, and pythons, the most poisonous fang-fronted ones are also the rarest, such as death adders and taipans. All around the coasts and out on the beautiful coral reefs, New Guinea teems with marine life. Divers here say there are more fish per cubic metre than any other place in the world.