单集简介 ...
Divers from all over the world come to explore the underwater caves in Blue Spring Park, USA, but if one of those divers gets into trouble, they need the help of Edd Sorensen. He's one of the world's top cave diving rescuers, and he's won many awards for his work. He told Matthew Bannister about the appeal of cave diving. (Photo credit Tarik Tinazay/AFP/Getty Images.)
更多