Great Barrier Reef, Australia

A UNESCO World Heritage Site, the Great Barrier Reef stretches over an area of ​​approximately 345 square kilometers along the Australian coast, 15 to 200 km from the coast. Its width is from 2 to 150 km.

It is the largest coral complex in the world, consisting of 3,000 individual reefs and over 900 islands, which are surrounded by reefs that form coastal islands. Studies have shown that the thickness of the coral layer making up the Great Reef is over 500 m.

The Great Barrier Reef is inhabited by 400 species of coral, 1500 species of fish, 4,000 types of molluscs and numerous endangered species such as large green turtles and dugongs - large herbivorous mammals leading only to aquatic life.