Cartier Island is a small, uninhabited island located in the Indian Ocean, part of the Chagos Archipelago. It covers an area of approximately 2.5 square kilometers and is known for its beautiful beaches and coral reefs. The island is surrounded by clear blue waters, making it a potential site for marine research and conservation. The island was named after the French explorer Jacques Cartier, who is famous for his voyages to Canada. Cartier Island is primarily composed of coral limestone and is part of a protected marine area, which helps preserve its unique ecosystem and biodiversity.