Longest swim under ice - breath held (no fins, no diving suit)
Stig Åvall Severinsen
Greenland Sermersoq,,Under ice at Qorlortoq Lake (Lake 40)
Stig Ă…vall Severinsen (Denmark) swam 76.2 m (250 ft) under ice at Qorlortoq Lake (Lake 40) in Ammasslik Island, Sermersoq Municipality, East Greenland on 17 April 2013. The depth of the ice was between 80 and 100 cm (2.62 and 3.28 feet).