Guillaume NĂ©ry is a champion freediver, and his sport exposes practitioners to carbon dioxide narcosis, which can lead to, among other symptoms, powerful hallucinations. This short film is inspired by NĂ©ry's experiences and the things he thinks he sees during a deep water dive.

Director Julie Gautier filmed Néry and translated his experiences onto film for Narcose—perhaps the closest most of us will ever get to seeing into the mind of a freediver. This video is NSFW for non-sexual female toplessness. It may also leave you wanting to take a nice, deep breath.

[via Mind Hacks]