These incredible pictures shows a group of hardy sailors swimming in ICEBERGS off the coast of Greenland.
Crew members say they love to jump into seas and pools where water temperatures plunge below freezing - and always put their head under water.
The sailors run an Iceland-based adventure holiday firm transporting guests to stunning frozen islands only accessible by boat.
Holidaymakers have to swim a lap around their boat before they can use the hot showers on board.
