Sea Turtle and More

The largest of all hard-shelled turtles, loggerheads are named for their massive heads and strong jaws (leatherbacks are bigger but have soft shells). Their reddish-brown shell, or carapace, is heart-shaped. Their front flippers propel them through the water like wings, and their hind feet stabilize and steer them. While adults males generally weigh about 250 pounds, loggerheads of more than a thousand pounds have been found.

The Loggerhead is considered a “keystone species,” meaning that other animals in its ecosystem depend on it for survival. These turtles feed on invertebrates, whose shells pass through their digestive systems and, upon excretion, fall back to the bottom of the ocean for other animals to eat as a calcium source. Predators also rely on loggerhead hatchlings for food, while more than a hundred species of animals—including barnacles, crabs, and algae—live on their shells.