A couple taking a walk by their local river were shocked to see a DOLPHIN surfacing in the water - 13 miles away from the sea.

Richard Priest, 32, and his wife Serena, 41, were strolling along the edge of River Nene in their home town of Wisbech, Cambridgeshire when they spotted a fin in the water.

In a video clip filmed by Richard on August 23, a dolphin can be seen gliding along the surface of the river.

Tesco manager Richard said: "I didn't believe it was a dolphin at first, it was such a shock.

Experts believe that in the majority of similar cases the animals safely make their way back to the ocean

"I was going for a walk with my wife and just by luck, I saw a big ripple in the river, then the dolphin fin popped out the water.

"I thought it was strange and the dolphin must be lost as I have never known a dolphin to be in the river so I reported it to Sea Watch Foundation who were very surprised."

The Sea Watch Foundation monitors cetaceans in British and Irish waters and after watching Richard's video, they confirmed it was indeed a common dolphin.

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Richard Priest, 32, and his wife Serena were stunned when they spotted the dolphin

The common dolphin species can measure up to 2.5 metres long and weigh up to 235kg and usually are found to be living in deep water.

Up to 29 species of cetaceans, which include dolphins and whales, have been sighted in the UK and Ireland since 2000, according to the charity.

Richard has claimed that the dolphin seemed to be ok but the charity were concerned and reported the sighting to British Divers Marine Life Rescue.

He added: "The charity were concerned but they did say that most of the time, the dolphins do find their own way home."