Islands, archipelagos, and island geography around the world
Greenland is the world's largest island, though it's mostly covered by ice.
Madagascar is the world's fourth-largest island and is known for its unique wildlife.
The British Isles include Great Britain, Ireland, and numerous smaller islands.
The Caribbean is home to many island nations, including Cuba, Jamaica, and the Bahamas.
Hawaii is a volcanic archipelago in the central Pacific Ocean, part of the United States.
The Galápagos Islands are famous for their unique wildlife and role in Charles Darwin's theory of evolution.
Iceland is a volcanic island nation in the North Atlantic, known for its geysers and hot springs.
The Maldives is an island nation in the Indian Ocean, known for its low elevation and coral reefs.
Coral islands (atolls) form from coral reefs growing around volcanic islands that have subsided.
Continental islands were once connected to continents but became separated by rising sea levels.
Oceanic islands form from volcanic activity and were never connected to continents.
The Philippines consists of over 7,000 islands, making it one of the world's largest archipelagos.
Sicily is the largest island in the Mediterranean Sea and part of Italy.
Island biogeography studies how isolation affects species diversity and evolution on islands.
Many islands face environmental challenges including sea-level rise and invasive species.