‘Swimming With Icebergs’, A Short Video About World Champion Freediver Stig Severinsen

“Swimming With Icebergs” is a short video by National Geographic about Stig Severinsen, a Danish freediver who currently holds multiple world records for various diving feats. The video, which is taken from the documentary The Man Who Doesn’t Breathe, demonstrates the diver’s ability to slow down his heart rate before diving via mammalian diving reflex.