
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 footage filmed by Mr Priest on August 23, a dolphin can be seen gliding along the surface of the river.
'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.'











