Oceania are the islands throughout the Pacific Ocean. The three regions that comprise Oceania are: Micronesia, Melanesia and Polynesia. All these are island regions. Micronesia is a group of <span>small islands in the western </span>Pacific Ocean. Melanesia is the group of islands<span> from </span>New Guinea island<span> in the southwestern </span>Pacific Ocean<span> to the </span>Arafura Sea. Polynesia is a group of islands<span> scattered over the central and southern </span>Pacific Ocean<span>.</span>