Wild Leatherback Sea Turtle Long-Distance Migration and Threats

Leatherback sea turtles make the longest migrations of any reptile but face severe threats throughout their vast oceanic range.

Key Facts

Leatherbacks are the largest sea turtle species, reaching up to 900 kg, and the longest migratory reptile
They migrate up to 20,000 km between nesting beaches and jellyfish foraging areas in cold ocean waters
Unlike other sea turtles, leatherbacks can maintain body temperature above ambient ocean temperature through metabolic heat
Pacific leatherback populations have declined by over 95% since the 1980s - critically close to extinction in the Pacific
Atlantic leatherbacks have shown more stability but still face significant threats from bycatch and beach loss
Longline bycatch, gillnet entanglement, and ingestion of plastic bags (mistaken for jellyfish) are primary mortality causes
Nesting beaches in Trinidad, Suriname, and Papua New Guinea are globally critical for remaining populations

Welfare Considerations

Leatherbacks that ingest plastic bags experience digestive obstruction that causes slow starvation. Longline-hooked turtles may be dragged underwater for hours before being hauled up - if alive, they may have internal injuries. The catastrophic Pacific population collapse represents millions of individual welfare tragedies over recent decades, caused primarily by fishing pressure and beach loss.

What You Can Do

Eliminate single-use plastic bags to reduce ocean plastic that kills leatherbacks
Choose seafood from fisheries certified to use circle hooks and turtle excluder devices
Support Trinidad and Suriname leatherback nesting beach protection programs
Donate to Pacific leatherback recovery programs that address the most severely depleted population
Learn about the remarkable thermal physiology of leatherbacks to appreciate their unique biology