An archipelago is a group of islands that are closely scattered in a body of water. These islands can vary in size and shape, and they often share similar geological features and ecosystems. Famous examples of archipelagos include the Hawaiian Islands in the Pacific Ocean and the Greek Islands in the Aegean Sea. Archipelagos can be formed through various geological processes, such as volcanic activity or the rising and falling of sea levels. They are often rich in biodiversity, providing habitats for unique plants and animals. Many archipelagos are popular tourist destinations, attracting visitors with their beautiful landscapes and vibrant cultures.