CNN Anderson Cooper 360 March 29, 2013 02:41:00
Given the doctor a whole new understanding of crocodiles and their underwater world. >> you're in the water, you've got the current washing over you, you can feel the changes in temperature. you think this is what it's like to be a crocodile. this crocodile is experiencing these same things. >> he has actually begun to take dna samples from crocodiles underwater, cutting off pieces of their tail. incredibly, they don't seem to mind. diving with nile crocodiles is only possible in the winter months, when the water is chilly and the animals are sluggish. these cold-blooded reptiles are far too d...