Picture it: As the wind-powered craft clips along the Coral Sea, a tropical breeze teases ... sailing along the Great Barrier Reef is a must-do. If you're looking to sail north of Cairns, you ...

As long as people have been visiting the Great Barrier Reef ... A giant clam lives at the bottom of the sea floor at Opal Reef.(ABC: Chris Lewis) "That doesn't diminish what we think the threats ...