Marine Turtle
Marine turtles play key roles in two ecosystem types that are critical to them as well as to humans—oceans and beaches/dunes. In the oceans, for example, marine turtles, especially green sea turtles, are one of very few creatures (manatees are another) that eat the sea grass that grows on the sea floor. Six of the seven species of marine turtles are listed as Endangered or Critically Endangered, and the outlook is increasingly grim. In the Pacific, leatherbacks are heading for extinction, fast, and in the Mediterranean, green turtle numbers have plummeted.
6*
* of the 7 species of marine turtles are critically endangered.

