In 2012, three deep-sea divers were on a routine operation in the North Sea when one of them became trapped underwater. Liu had to dive in deep, dark water in order to recreate the harrowing rescue.

Although it lives an aquatic lifestyle, it still needs to breathe air. So, how does it survive underwater? The answer is ...

Drink volume was 1300 ml (osmolality 324 mOsm/l) and drinking time was 50–60 min. The diving protocol consisted of an open sea field air dive at 30 msw depth for 30 min followed by a 9 min stop at 3 ...