Great Barrier Reef generates billions

The Great Barrier Reef is the most valuable coral reef system on earth, generating up to A$2.29 billion ($2.68 billion) a year.

Research by scientists from Yale University found coral reefs had major economic benefits.

The Great Barrier Reef was one of the most popular ecotourism sites in the world, with about two million visitors annually spending up to A$1145 a visit.