(Chelonia mydas) The green sea turtle is a medium to large brownish sea turtle with a radiating or mottled pattern of markings on the shell. The head is small in comparison to the other sea turtles and the biting edge of the lower jaw is serrated. Adults shell lengths range in size from 0.9-1.1 meters (36-43 inches) and weights average 90-137 kilograms (200-300 pounds). Primarily a tropical herbivorous species, the juveniles frequently occur in Florida waters especially in areas abundant with sea grasses. The greatest cause of decline for green turtles has been commercial harvest for eggs and food, as well as leather and jewelry.

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