Final Answer:
The biggest coral reef in the world, the Great Barrier Reef, is located off the coast of Australia.
Step-by-step explanation:
The Great Barrier Reef is situated off the northeastern coast of Australia and is the largest coral reef ecosystem globally, known for its unparalleled biodiversity and stunning marine life. Stretching over 2,300 kilometers (1,430 miles), the reef comprises thousands of individual reefs and islands. It is a UNESCO World Heritage site and a natural wonder that attracts millions of visitors each year.
Australia, renowned for its unique flora and fauna, is home to this extraordinary natural wonder, showcasing the significance of marine conservation and environmental protection in the region.