Animals

A drawing of a green sea turtle

Green sea turtle Facts for Kids

Chelonia mydas ยท keh-LOH-nee-uh MY-das

It grazes on seagrass underwater, like a cow in a meadow.

The green sea turtle swims in warm seas with its flippers. It eats seagrass and seaweed. Mother turtles go to a sandy beach to lay their eggs.

Green sea turtles are named for the green color of their fat, not their shell. Young turtles eat small sea animals, but grown turtles eat mostly seagrass and algae, and their grazing helps keep seagrass beds healthy. They breathe air, so they must come up to the surface, but they can rest underwater for a long time.

Green sea turtles travel long distances between the places where they feed and the beaches where they hatched. At night, a mother crawls up the beach, digs a nest with her back flippers and covers her eggs with sand. When the hatchlings come out, they head for the brightest horizon, which is usually the sea. People protect nesting beaches, turn off bright lights near them and use fishing gear that lets turtles escape, and these efforts have helped many groups of green turtles recover.

How big is a green sea turtle?

๐Ÿง’ our measuring child, 4 ft1.2 m๐Ÿข Green sea turtle, 3 ft1.1 m long

Green sea turtle in numbers

Length36 in to 3.9 ft91 cm to 1.2 m1shell length of a typical adult
Height at the shoulderno checked number yet
Weight300 to 351 lb136 to 159 kg1typical adult
Top speedno checked number yet
How long it lives70 years70 years1
What it eatsseagrass and algae
Where it liveswarm seas around the world
What kindReptiles
Is it in danger?Doing fine (Least Concern)2

A number we couldnโ€™t find on a page we trust says so, instead of guessing.

Wow!

Compare the green sea turtle

Friends and neighbours

Three questions

What does the green sea turtle eat?

The answer: Plants. It eats seagrass and algae.

Where does the green sea turtle live?

The answer: Ocean. It lives in warm seas around the world.

Which is longer, the green sea turtle or the cheetah?

The answer: The cheetah. Look at them side by side on the compare stage.

Books about the green sea turtle, free at the library

Ask a grown-up to tap the button: it shows where to borrow a book about the green sea turtle for free.

Where these numbers come from

  1. NOAA Fisheries, checked 30 October 2026.
  2. Wikidata, from the IUCN Red List, checked 30 October 2026.
  3. Wikidata, Green sea turtle (Q199458), checked 30 October 2026.

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