Oceania also includes three island regions: Melanesia, Micronesia, and Polynesia (including the U.S. state of Hawaii). Oceania's physical geography, environment and resources, and human geography can be considered separately. read more
Oceania is a geographical, very often a geopolitical region consisting of numerous lands - mostly islands in the Pacific Ocean and the vicinity. As to why it is considered a continental region, that varies on what source you use. read more