An island nation is a country that is entirely located on one or more islands. These nations are surrounded by water and can vary in size from small, uninhabited islands to large landmasses with significant populations. Examples of island nations include Japan, New Zealand, and Madagascar. Island nations often have unique ecosystems and cultures due to their geographical isolation. They may rely heavily on maritime resources for their economy, including fishing and tourism. Additionally, their location can make them vulnerable to natural disasters like hurricanes and rising sea levels, impacting their development and sustainability.