Add Yahoo as a preferred source to see more of our stories on Google. Scuba Diving Snorkeling at Great Barrier Reef Cairns Port Douglas (Sea Turtle, Giant Clam, Hard Cora, Shark, School of Fish, Soft ...

In cartoons, when a turtle is spooked, it retreats into and closes up its shell. While used for comic effect, this imagery is based in fact — although not all turtles are capable of this protective ...