The geographic term for a body of land surrounded by water is an island. Islands can be found in oceans, seas, lakes, or rivers and vary greatly in size and ecosystem. They can be formed through various geological processes, including volcanic activity, erosion, or sediment deposition. Islands often host unique biodiversity due to their isolation, leading to a variety of species that may not be found elsewhere. Additionally, islands can hold cultural significance, being home to distinct communities and traditions influenced by their geographical context.