Follow free diver Johanna Nordblad in this documentary as she attempts to break the world record for distance traveled under ice with one breath.

yle=color: rgb(17, 17, 17); f>　　这部纪录片聚焦自由潜水者约翰娜·诺德布莱德，讲述她如何尝试在不换气的情况下，打破冰下潜水距离的世界纪录。