What region of Oceania includes Vanutu and Fiji as well the Solomon Islands New Caledonia?

The region of Oceania that includes Vanuatu, Fiji, the Solomon Islands, and New Caledonia is known as Melanesia. Melanesia is one of the three main geographic regions of Oceania, along with Micronesia and Polynesia. Melanesia is characterized by its diverse cultural and linguistic heritage, as well as its rich biodiversity.