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A leatherback sea turtle hatchling on sand, its dark leathery shell marked with pale ridges of small beaded tubercles. Real photograph
Real photograph Photo by Jolo Diaz on Pexels · Pexels License

Leatherback sea turtle

Dermochelys coriacea

say it LETH-ur-bak

Why we love them

The leatherback is the largest turtle in the whole world. It is different from other sea turtles because it does not have a hard shell. Instead, its back is covered in tough, rubbery skin with seven long ridges running from front to back. Its two front flippers are very long and help it swim great distances.

Leatherbacks love to eat jellyfish and other soft, jelly-like sea creatures. Their mouth and throat have pointy, backward-facing spines inside, which help them hold onto their slippery, wobbly food so it does not slide away.

This turtle is a wonderful diver and swimmer. It can dive down deeper than any other turtle, far into the dark water, and hold its breath for a long time. It also travels enormous distances, swimming across whole oceans between the places where it eats and the beaches where it nests.

Leatherbacks live in oceans all around the world, from warm seas to cooler ones. Mother turtles come ashore on sandy tropical beaches at night to lay their eggs in the warm sand. After a while, tiny hatchlings dig their way out and hurry down to the sea.

There are fewer leatherbacks than there used to be, so people work hard to help them. Kind rules protect their nesting beaches, keep their eggs safe, and help turtles avoid getting tangled in fishing nets, so these gentle giants have a better chance to grow up and swim free.

My home

Open ocean, coastal waters, tropical beaches

Where I live

Pacific Ocean, Atlantic Ocean, Indian Ocean

What I eat

Jellyfish, salps

How long I am

1.5–1.8 m

How heavy I am

340–454 kg

How long I live

50 years

The leatherback is the biggest turtle in the whole world.

Instead of a hard shell, it has tough, rubbery skin with long ridges down its back.

It loves to eat jellyfish and can dive deeper than any other turtle.

Every leatherback sea turtle can feel happy, scared and loved — just like you.

Looking after my friends

Needs our help

Their numbers are getting smaller, so people are working to protect their homes.

You can help by learning their names, keeping wild places clean, and telling someone why this animal matters.

Official status: vulnerable (IUCN)

Where this came from

  • Dermochelys coriacea (Leatherback) — IUCN Red List conservation status — IUCN Red List of Threatened Species
  • Leatherback Turtle — NOAA Fisheries (National Oceanic and Atmospheric Administration)
  • Leatherback sea turtle — Wikipedia