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Dolphin filmed in the River Severn

July 28 2014 Last updated at 20:46 BST clock

Maritime experts said one is discovered in the River Severn in Gloucestershire dolphin make his own way back to the sea

The creature was filmed by Alexandra Farthing last week swim in the river between Stone Bench and Elmore Lane.

BBC reporter Steve Knibbs spoke with Mrs. Farthing and Regional Director for the British Marine Life Rescue Diver John Hardy.