here we are, the village of tortuguero, and it's mad!or, like, two hours coming up here. and this place now... sorry. tranquilo. absolutely rocking. i love it! although this place is pretty much in the middle of nowhere, tens of thousands of people come to visit every single year, and most for one reason — the sea turtles. tortuguero is a key nesting site for three types of sea turtles, including the endangered green turtle. one of the biggest threats to these animals comes from poachers targeting them and their eggs, which they lay on the beaches here. local conservation groups say that the turtle—spotting tours help keep a watchful eye over them. but they mainly nest at night, and so it's a late one for me. hello. hi. i'm looking for caitlin. it's me. hi. caitlin rankin, from the sea turtle conservancy, has been helping to protect these creatures since she was 12. so maybe you can help me with it? it's the calliper. what's this for? it's for taking measurements of the carapace — from the turtle. wow. yeah. are they that big?! they can