evidence: - Navassa Island is a small, uninhabited territory of the United States with unique biodiversity and a rich maritime history. It’s a haven for researchers and a nesting site for seabirds, but access is highly restricted. [...] Navassa Island is an unincorporated territory of the United States. Navassa Island, located in the Caribbean Sea, is a small, uninhabited island that is considered an unincorporated territory of the United States. As such, it falls under the jurisdiction of the U.S. federal government.