Don't try this at home.
A video posted by YouTube user 8Booth shows a man jump from a more than 10-story high waterfront building and into the Newport Harbor in Southern California.
The footage shows the man in fast-forward, climbing the inside stairs of the Newport Tower condominiums and plunging into the water, landing just feet away from a boat dock.
The daredevil used two GoPro cameras to capture his massive jump from the tall building.
The incident is currently under investigation.
Police say at minimum the jumper could be cited for trespassing.