(LAD BIBLE) A Costa Rican national park has an annual 'mass arrival' of female sea turtles - and one biologist has spoken out about the incredible day the park encountered the biggest swarm of the creatures to ever be captured on camera.
The stunning footage shows the huge gathering of turtles, known as an 'arribada' in Spanish, and sees hundreds of thousands of the animals heading to the coast to lay their eggs on the beach at the country's Ostional National Wildlife Refuge.
Biologist Vanessa Bézy has studied the incredible phenomenon for years. She filmed the reptiles as part of her research, in which you can see the huge swarm of olive ridley sea turtles making their way to shore.
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