Dramatic video footage has emerged of a jet ski accident in Orange County, Florida, which left a man unconscious in the water.

Luckily for the victim, off-duty police officer Alex Floyd – who was out riding jet skis with his dad - happened to be right next to the crash when it took place and was able to save the man's life.

Floyd rushed over to the man, who he found floating unconscious, face-down, with a deep cut on his chin and blood coming from his ears.

The officer told FOX 13 News that he was simply in the right place at the right time when accident happened on 3 December.

The victim is reported to be recovering well after being taken straight to hospital.

David Stansel, from a local Jet Ski shop, told FOX 13 that it's always a good idea to ride with at least one other person if you are going jet skiing. He also stressed the importance of being safe and responsible on the water and wearing a life vest; in the video the man's life vest stops him from sinking while he is unconscious.

The footage also shows the jet ski continuing to run following the crash, despite the fact that the man is wearing a kill switch lanyard around his wrist, which is designed to turn the engine off in such an event. According to Stansel, it is likely that the lanyard slipped off his wrist rather than shutting down the engine.