caitlin laughs. yeah. she's saying, "yeah, you got close enough." they laugh.e is this one? well, it's a green sea turtle. yeah. they can weigh until 200kg. wow! yeah. tortuguero is the second most important in the world for green sea turtle. so we have good numbers, but the whole population is going down. so how does your organisation help all these turtles? well, we take measurements of the female and we tag her. we know one turtle can lay until six or seven nests each season. we know they wait until two or three years to come and lay again. and we know all of that because of the tags. so can we measure it? sure. but i'm going to do it first and then you can try it. 0k. all right, let's go. we place this in the beginning. and we take it all the way to the end. 0h. is she done? i think...i think she leaving. she's done?! yeah. right. we need to get out of her way, don't we? yeah. you cannot be in front of her. you can't be in front? no. 0k. what a moment! look at her! for me, this is really special. how do you feel, given the fact you've done this so much? doe