Describe the Great Barrier Reef. Why is this site considered one of the world's most important ecosystems?

Answer:

The Great Barrier Reef is a vast system of coral reefs and islands off the northeastern coast of Australia. It is one of the world's most important ecosystems because it supports an extraordinary variety of marine life, including corals, fish, turtles, and other species. Its reefs provide habitat and nursery areas, support food webs, and help protect nearby coasts.