Yet, 70 million years ago, a truly colossal turtle, Archelon, dominated the seas. This magnificent creature, now long extinct, was the largest turtle ever known. It measured 4.6 m (15 ft ...

Leatherbacks are the largest turtles on Earth, growing up to seven feet long and exceeding 2,000 pounds. These reptilian relics are the only remaining representatives of a family of turtles that ...

Weighing up to 700 pounds green turtles are among the largest sea turtles in the world. Their proportionally small head, which is nonretractable, extends from a heart-shaped carapace that measures ...