The world’s largest coral reef system is the Great Barrier Reef, located off the northeastern coast of Australia. Spanning over 344,000 square kilometers, it is composed of nearly 3,000 individual reefs and 900 islands. This UNESCO World Heritage Site is renowned for its stunning biodiversity, serving as a habitat for thousands of marine species, including various corals, fish, mollusks, and sea turtles. The Great Barrier Reef also attracts millions of tourists each year, contributing significantly to Australia’s economy and ecological awareness. However, it faces threats from climate change, pollution, and coral bleaching, prompting conservation efforts to protect this natural wonder.