The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 1,400 mi over an area of approximately 133,000 sq mi. The reef is located in the Coral Sea, off the coast of Queensland, Australia. Unfortunately, water visibility was significantly less than what we hoped for.
Leaving Cairns for Michaelmas Cay
Passengers in Silhouette
Some of the 140 passengers
A crew member threw some chum in the water when we reached the reef.
This, and the next two pictures, were taken from inside a semi-submersible boat that took a short tour of the reef
The remaining underwater pictures were taken while snorkeling at the reef
Parrot Fish
The exit siphon hole of a giant clam
Entry siphon hole on the right and exit siphon hole on the left of a giant clam
A closed giant clam
Several boats were all heading back to Cairns at the same time