Green Sea Turtle

Green Sea Turtle

Scientific Classification

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Cryptodira
Family: Cheloniidae
Genus: Chelonia
Species: C. mydas
Binomial name: Chelonia mydas

The green sea turtle has pet names like Pacific green turtle, black (sea) turtle, or just green turtle. It is the only variety in the genus Chelonia and it is huge in size, common from the Cheloniidae family. This sea turtle, Chelonia Mydas, lives in subtropical and tropical seas all around the world. The Pacific and the Atlantic Oceans are the two areas where they exist in plenty.

The Green sea turtle is a reptile; its predecessors first grew on the land. Afterward, they moved to the ocean for survival around one hundred and fifty million years back. These turtles are one among the few prehistoric varieties that existed early enough to observe the evolution and extinction of the dinosaurs.

Common Name:

The green sea turtle achieves its name from the green color fat below its shell. (In certain places the Pacific green turtle also takes the name of the black sea turtle)

READ MORE:  Spotted Turtle


Green Sea Turtle

The sea turtles have two pairs of prefrontal scales (scales in front of its eyes) but the green sea turtle has a just a single pair; so it is easy to discriminate them from the others. The body of the Pacific green turtle (aka Black Sea Turtle) has a raised tomb like appearance; the frontal part is not perfectly curved as seen in the other sea turtles. It has a small blunt head and serrated (saw like) jaw. Its body is more or less oval with a good depression (flattened). Compared to the Pacific sea turtle it has a bony carapace with no ridges, the carapace color changes from dull green to very deep green and pale yellow to very bright yellow, green and brown tones that radiate the stripes. The plastron color varies from solid white to white or yellow tint in the populations in the Atlantic. They are deep-gray-bluish-green in the Pacific population. Its four lateral scutes (scales) are large and do not overlap. There is only one visible claw in every flipper. The juveniles are either dark brown or somewhat black, with their belly and margin of the flippers white.

READ MORE:  Wood Turtle

Size: The adult carapace length is 3-4 ft. (83 – 114 cm). These green turtles represent the largest turtles in the Cheloniidae family. The largest known turtle measured 5 ft (152 cm) and weighed 871 lbs (395 kg)

Weight: Normal adult’s weight is 240 – 420 lbs (110-190 kg)


During the course of its life, its diet varies. Till they acquire a length of 8 – 10 inches, their diet comprises of young crustaceans, grasses, worms, aquatic insects and algae. When they grow over 10 inches in length, their diet is mainly algae and sea grass. Thus, in adulthood, this is the only sea turtle that is a strict vegetarian. Their serrated jaws assist them in stripping the vegetation.


Only occasionally we find them in Open Ocean, their main habitat is adjacent to the coastal line and around islands. They live in protected shores and bays, particularly in locations having sea grass beds.


Green turtles breed every two years, the numbers of females that breed varies to a great extent every year. Breeding takes place 3 – 5 times in a season. They lay an average of 115 eggs in a single session. The incubation period is about 60 days.

READ MORE:  Black Marsh Turtle - Fresh Water and Terrestrial


Green Sea Turtle

The US Federal Endangered Variety And Act, International lists them as endangered (on the verge of extinction in the near future). The International Union for Conservation of Nature and Natural Resources have listed them as endangered (facing a great risk of extinction in the wild in the coming future)

Survival Threats

Unintentional catches while trawling shrimps for commercial purposes contributes to their increased death rate. Commercial harvesting for food and eggs is the greatest threat. Parts of the green turtle go to the manufacture of leather. Stuffing small turtles is also a curious hobby for some people.

Population Estimate

Between 85,000 and 90,000 breeding females.

As Pets

You cannot keep sea turtles as pets as they are on the endangered list and therefore it is illegal.

Similar Posts