A bouncer was filmed brawling with a skinny-dipper who dived into a river next to a packed pub .
The security worker was seen confronting the near-naked swimmer and engaging in a brutal fist fight.
Drinkers at The Boat Club beside the River Wear in Durham were shocked to see violence on Easter Sunday.
The clip has since been shared online under the caption: "The lad did f*** all. Durham boat inn."
The skinny-dipper, who was stripped down to his shorts, jumps into the river at the start of the clip.
But after he climbs out, a security man approaches him. The swimmer raises his fists and then places a hand on the doorman's arm.
However, the bouncer punches the swimmer before other people rush in by the waterside.
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The first security guard continues to punch the swimmer until he is dragged away by his colleagues.
Alan Warnaby wrote under the viral Facebook post: "I took these lads home in a taxi hours after this happened and after a lot more drink.
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"I have to say they were good as gold and good crack. It was a kid having fun with a group of his mates albeit getting egged on by them for a laugh but they weren't out to cause and trouble."
Lady-Kat Pearce said: "Looks like the lad was going to try to grab the bouncer and holl him in the water as a joke. The bouncer reacted badly there."
The Boat Club has been contacted for comment.
