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WWF

Infographic: Sea turtles

For more than 100 million years sea turtles have covered vast distances across the world's oceans, filling a vital role in the balance of marine habitats.

7 species of sea turtles grace our ocean waters and most are endangered

Sea turtle infographic silhouette leatherback
Leatherback

Dermochelys coriacea

Status: Vulnerable
Length: 55–63 in.
Diet: Jellyfish

Sea turtle infographic silhouette loggerhead
Loggerhead

Caretta caretta

Status: Vulnerable
Length: 33–49 in.
Diet: Clams, sea urchins

Sea turtle infographic silhouette green
Green turtle

Chelonia mydas

Status: Least Concern
Length: 31–47 in.
Diet: Seagrass

Sea turtle infographic silhouette flatback
Flatback

Natator depressus

Status: Data Deficient
Length: 31–37 in.
Diet: Crabs, other crustaceans, mollusks

Sea turtle infographic silhouette hawksbill
Hawksbill

Eretmochelys imbricata

Status: Critically Endangered
Length: 30–35 in.
Diet: Sponges, sea anemones

Sea turtle infographic silhouette kemps ridley
Kemp's Ridley

Lepidochelys kempii

Status: Critically Endangered
Length: 24–28 in.
Diet: Crabs, other crustaceans, mollusks

Sea turtle infographic silhouette olive ridley
Olive ridley

Lepidochelys olivacea

Status: Vulnerable
Length: 24–28 in.
Diet: Crabs, other crustaceans, mollusks

Deadly threats at every life stage

Bycatch

The incidental capture of non-target species when fishing.

Illegal trade and direct consumption

Used for meat, eggs, shell, leather, curios.

Sea turtle infographic house
Habitat loss

Uncontrolled coastal development destroys or disturbs nesting beaches.

Climate change

Global warming could skew sex ratios, resulting in more females.

  • 90% population decline

    of Eastern Pacific leatherbacks over the last 30 years

  • Tens of thousands

    of sea turtles are lost each year to overharvesting and illegal trade

  • 4,950 turtles are caught

    as bycatch each year by Indonesian longline vessels alone

How you can help

Call for a global treaty on plastic pollution

World leaders are negotiating a legally binding global treaty to end plastic pollution. Add your name in support of an ambitious treaty.

Make a good buy when traveling

Think twice and ask at least a few questions before buying that tortoiseshell souvenir, coral jewelry or snakeskin belt.

Sea turtle infographic suitcase
Support sea turtle ecotourism

Book a sustainable tour to see turtles, particularly when it benefits local communities.

Sources

  • "90% population decline …" statistic from Las Baulas National Park, Costa Rica
  • "4,950 turtles caught as bycatch …" statistic from Research Center for Capture Fisheries Indonesia Ministry of Marine Affairs and Fisheries (PRPT)
  • More information can be found on the turtle species page.