Oceania is a sprawling, diverse region that bridges Asia and the Americas, comprised primarily of thousands of islands scattered across the Pacific Ocean. It is traditionally subdivided into four distinct subregions: Australasia (including Australia and New Zealand), Melanesia, Micronesia, and Polynesia. Characterized by spectacular natural contrasts, the region encompasses everything from the vast arid landscapes of the Australian Outback and the dramatic snow-capped fjords of New Zealand, to the low-lying coral atolls of Tuvalu and the volcanic peaks of Fiji. It is globally renowned for its exceptional marine ecosystems, such as the Great Barrier Reef, its ancient Indigenous cultures, including the Aboriginal Australians and Māori, and its unparalleled tropical beach destinations.