One hundred thousand years ago, a human cousin walked a rock- ribbed beach along the Mediterranean Sea, her head lowered and her large eyes scanning the shoreline. Now and again she stopped, bent her ...

Scuba Diving Snorkeling at Great Barrier Reef Cairns Port Douglas (Sea Turtle, Giant Clam, Hard Cora, Shark, School of Fish, Soft Coral, Great Visibility, Pufferfish)© Kitjapat Film/Shutterstock.com ...