Morelia amethistina is a non-venomous species of snake, known as the amethystine, scrub python or Sanca permata locally, found in Indonesia, Papua New Guinea and Australia. Popular among reptile enthusiasts, and noted for its coloration and size, it is one of the six largest snakes in the world, as measured either by length or weight, and is the largest native snake in Australia and Papua New Guinea. There are currently four subspecies of the nominate race, Morelia amethystina amethystina, which are generally recognized. The Mollucan islands, including Halmahera, Ternate and Tidore are home to Morelia a. tracyei. The Tanimbar Islands are home to a smaller race, Morelia a. nauta. On the island of Seram, Morelia a. clastolepis can be found, and mainland PNG (including the Indonesian western half, once called Irian Jaya—now West Papua) and many of its near offshore islands Morelia a. amethystina is quite common. In Australia, Morelia a. kinghorni is represented.