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Ocean animals

Green sea turtle

Amazing fact

Green sea turtles have serrated jaws for tearing plants.

University of Michigan Animal Diversity Web
Green sea turtle in its habitat (illustration)

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An illustration based on the real animal.

A little discovery to share.

Green sea turtles have serrated jaws for tearing plants.

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THE REAL WORLD

The real Green sea turtle

Scientific name
Chelonia mydas
Japanese name
アオウミガメ
Group
Ocean animals
Class
Reptilia
Order
Testudines
Family
Cheloniidae
Genus
Chelonia
Facts about the real animal.

Where the name “Green sea turtle” comes from

In some places it is called asahi-game because its shell’s radiating pattern resembles the morning sun.

鳥羽水族館
01

This sea turtle mostly eats seagrass, trimming it like a living lawnmower and keeping the seagrass healthy.

02

The 'green' (ao) in its name refers not to its shell but to the green fat under its shell.

03

In Japan it nests south of Yakushima, and females usually return to lay their eggs near the beach where they hatched.

How the Green sea turtle lives

Hatchlings swim offshore after emerging from the nest. As they grow, they move to feeding grounds in shallow coastal waters. Females nest on sandy beaches at night.

NOAA Fisheries

Basic data

Range
Tropical to temperate waters worldwide
鳥羽水族館
Conservation status in Japan
Vulnerable (VU)Ministry of the Environment of Japan, 5th Red List (2026)

Where the Green sea turtle has been recorded

World map with dots where the Green sea turtle has been recorded
Each dot marks a place with observations or specimens shared on GBIF. Some records are of animals that strayed or were brought by people, so the dots are not always where the animal lives.

Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF

Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.

Names around the world

简体中文
绿蠵龟
繁體中文
綠蠵龜
Português (Brasil)
Tartaruga-verde
Bahasa Indonesia
Penyu hijau
Tiếng Việt
Đồi mồi dứa

Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.

Sources and how we check

We check each fact against its source. The illustrations simplify how the real animal looks.

The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.

The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.

The conservation status in Japan is the category in the Red Lists of the Ministry of the Environment of Japan, which assess the risk of extinction for wild animals in Japan.

This page was translated from the original Japanese with the help of AI.

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