The ocean known for its Great Barrier Reef is the Coral Sea, which is part of the Pacific Ocean. The Great Barrier Reef is the world’s largest coral reef system, stretching over 2,300 kilometers (1,430 miles) along the northeast coast of Australia. It comprises thousands of individual reefs and islands, hosting a staggering diversity of marine life, including countless species of fish, sharks, sea turtles, and corals. The reef is not only a UNESCO World Heritage Site but also an important ecological and economic resource, attracting tourists from around the globe for snorkeling, diving, and eco-tours.