Which island nation is located off the coast of East Africa and is known for its unique wildlife?

Which island is the largest in the Cyclades? What is the world's largest island by area? Which island nation is located in the North Atlantic and is known for its hot springs and geothermal activity? What is the world's second-largest island by area? Which island is the largest in the Japanese archipelago? What is the largest island in the British Isles? Which island is the largest in the Hawaiian archipelago? Which island is the largest in the Canadian province of Quebec?