Exploring Leatherback Sea Turtles: Biology, Migration, and Conservation

Studying Leatherback Turtles in Costa Rica

• 💡 Students Daniel and Martin traveled to Costa Rica to learn about leatherback turtles during a 10th-grade field trip.
• 🔬 They assisted marine biologists with ongoing research, including counting turtles, tracking nests, and recording data on hatchlings.
• 🌊 The experience provided hands-on learning about sea turtle species, habits, and life cycles.

Ancient Reptiles Facing Extinction

• ⏳ Leatherbacks are among the oldest reptiles on Earth, with origins dating back about 150 million years to the late Jurassic period.
• ⚠️ All species of great sea turtles are currently at risk of extinction, with only one turtle existing for every thousand from ancient times.
• 🌍 Biologists aim to preserve sea turtles through increased knowledge and informed conservation efforts.

Unique Characteristics and Ecosystem Role

• 📏 Leatherback turtles are the largest sea turtles, growing up to 9 feet long and weighing up to 1,500 pounds.
• 🍽️ They play a vital role in ocean ecosystems by eating vast quantities of jellyfish (over 400 lbs daily) and grazing on seagrass.
• 🏖️ These turtles also bring nutrients to nesting beaches, helping plant growth and preventing erosion, thus balancing food webs.

Adaptations for Deep Ocean Life

• 🛡️ Unlike other sea turtles, leatherbacks have a tough, leathery skin instead of a hard shell, which allows for extreme flexibility.
• 🌊 This unique adaptation enables them to dive deeper than any other sea turtle, reaching depths of up to 4,000 feet.
• 🧬 Their flexible shells can compress under immense pressure, which would crack a rigid shell, allowing survival at depths where human scuba gear cannot go.

Historical Survival and Modern Threats

• ☄️ Ancestors of leatherbacks survived the KT event 65 million years ago, a mass extinction caused by an asteroid impact that wiped out dinosaurs.
• 💔 Despite their ancient resilience, finding mates is difficult as they are pelagic and swim the ocean alone.