Meet the Leatherback: Giants of the Sea
November 10, 2025
For more than 100 million years, sea turtles have traveled the oceans, connecting ecosystems across the globe. Among them, the leatherback sea turtle is truly extraordinary.
These giants are the largest turtles in the world, capable of growing over 5.5 feet long and weighing more than half a ton (that’s about the size of a Smart Car!). Unlike other turtles, they don’t have a hard shell—their name comes from their thick, flexible, leather-like carapace. They are also record-breaking divers, plunging to depths of nearly 4,000 feet in search of jellyfish, their favorite meal. And with migrations stretching up to 12,000 miles a year, leatherbacks are one of the most well-traveled animals on Earth.
Why They Matter
Leatherbacks are more than ocean wanderers. By feeding on jellyfish, they help maintain balance in the food web. Their epic migrations link ecosystems across entire ocean basins, reminding us how connected our planet truly is. And when they come ashore to nest, they play a role in nourishing coastal habitats, transferring marine nutrients back to the beach.
The Situation Today
In the Eastern Pacific, leatherback sea turtles now face serious challenges. Their population has declined over the past few decades, and scientists estimate that only a few hundred individuals remain in the region. Each nest laid on Oaxaca’s beaches is precious, representing a chance for the species to continue its ancient journey.
What We’re Doing
WILDCOAST works with local communities and partners to give these turtles the best possible chance at survival. Together, we:
- Monitor nesting beaches in Oaxaca throughout the season.
- Relocate vulnerable nests to protected enclosures.
- Collect valuable data to contribute to international research.
- Share environmental education with children and best practices with ecotourism providers.
Our work is rooted in collaboration with indigenous and Afro-Mexican communities and the National Commission for Protected Natural Areas (CONANP). This community-based approach has already helped olive ridley sea turtles recover in Oaxaca, and we believe leatherbacks can too.
Looking Ahead
Leatherbacks are ancient survivors, but their future depends on us. While they are considered critically endangered in the region where we work, there is still time to make a difference. With the right protections, community action, and global support, these giants of the sea can continue their migrations for generations to come.
WILDCOAST is proud to stand on the beaches of Oaxaca, working alongside local communities to ensure that happens.
