An island is a piece of land that is completely surrounded by water. Islands can be found in oceans, seas, rivers, and lakes. They vary in size, from small islets to large landmasses like Greenland. Some islands are home to unique plants and animals, making them special ecosystems. People often visit islands for their beautiful beaches and natural scenery. Popular tourist destinations like the Bahamas and Hawaii attract visitors with their warm weather and vibrant cultures. Islands can also have rich histories, with many being inhabited for thousands of years by indigenous peoples.