04/24/2022
Leatherback Sea Turtle Monitoring Program:
Words cannot express the unforgettable experience we had working up close and personally with endangered leatherback sea turtles. It was an honor and a privilege to be a part of the incredible network of people who work so hard to protect these majestic creatures. This is our story.
“The leatherback sea turtle is the largest turtle in the world and the only species of sea turtle that lack scales and a hard shell. They are named for their tough rubbery skin and have existed in their current form since the age of the dinosaurs. Leatherbacks are highly migratory, some swimming over 10,000 miles a year between nesting and foraging grounds. They are also accomplished divers with the deepest recorded dive reaching nearly 4,000 feet—deeper than most marine mammals” (NOAA).
Pacuare Reserve’s beach is one of the most important nesting sites for endangered leatherback sea turtles. As the mamma turtles come out of the sea to lay their eggs on the beach, they are exposed to many threats including natural predators, habitat loss, climate change and human disturbance while nesting. One of the biggest threats in Costa Rica is the illegal poaching of sea turtle eggs. The beach monitoring program we participated in works to stop the illegal egg trade, educate local communities and conserve sea turtles.
During our stay at Pacuare Reserve, students worked with research assistants for 3 nights to monitor leatherback sea turtles. Groups of 3-4 students worked in 4 hour shifts (8pm-12am, 10pm-2am or 12am-4am) patrolling the beach for nesting mothers. When a turtle was found laying her eggs on the beach, students participated in research methods that included:
*Gathering and counting eggs, then relocating eggs to the hatchery.
*Collecting biometric data - length and width of the shell; circumference of neck.
*Checking for damages or injuries.
*Tagging the turtles with external metallic tags and internal PIT tags (passive integrated transponders).
We witnessed the process of these amazing mothers emerging from the sea, using their flippers to move up the beach, dig their nests, lay their eggs, camouflage their nests and return back to the water. We were all in awe of these massive and truly magnificent animals.
We were not allowed to take pictures of the turtles or the process because sea turtles are very sensitive to any disturbance; but below are pics of leatherback females and the turtle monitoring program that our students participated in (taken from EPI website).