A hammerhead shark dragged a US college student in his kayak up the Atlantic coast for a two-hour ‘South Florida sleigh ride’ that the kayaker taped with a head-mounted camera and posted on You Tube.

Adam Fisk, 22, posted a five-minute clip of his adventure titled Lone Man Gets Towed for Miles in Kayak by 11 Foot Hammerhead Shark.

At one point, Fisk dunked the camera into the water and recorded the shark swimming ahead of the kayak.

The ride started out smoothly but turned frightening

A student at Florida Atlantic University, Fisk set out in a kayak on Sunday with several poles to go fishing before the shark took his bait near Boynton Beach, Florida.

“I threw my bait out and went to reel my other one in so I wouldn’t get tangled, and I just had time to pick up the rod before the other one already got picked up by that hammer,” Fisk wrote on the You Tube site.

“It must have been sitting right under me and I had no idea.”

Fisk is a member of Team Rebel Fishing, a group of extreme anglers, according to its website. The group estimated Fisk was dragged by the shark for 19 kilometres. He said that the ride started out smoothly but turned frightening when the shark twice reversed course.

“It would do a 180-degree turn and come straight back at me and that rally scared me because I couldn’t see it and I didn’t know if it was coming to bite me,” he said.

Fisk said he turned his kayak around until the line got taut and the shark began pulling again. He said the shark took him out to sea and around in circles, ending at Lake Worth, Florida.

“Hooked a hammerhead in 50 feet of water and got dragged out to 250 feet,” Fisk posted on his Facebook account of the ride under the headline ‘I took a South Florida sleigh ride today and I ain’t talkin’ Santa Claus’.