Emergency crews rushed to the scene in the town of Ironbridge in Shropshire after they caught the man on CCTV.
He was spotted entering the River Severn at about 9.50pm on Friday night and hasn’t been seen since.
Police are now desperately searching for the man, who wasn’t wearing a top when he entered the water.
He was last seen near a bridge by the Robin Hood pub in the town.
Despite the police, the fire service and rescue teams carrying out an extensive search, the man is still missing and officers are now worried about his safety.
In a statement local police said the man is ‘white, with short dark hair, of a medium build, and was last seen wearing no top and dark-coloured trousers’.
He also has a large dragon tattoo on his chest, which was visible in the CCTV footage, and he is believed to be in his thirties.
Detective Inspector Steve Goddard from West Mercia Police, said: ‘We appreciate the images we have released are not the clearest, but we hope that someone will be able to help us identify the man.
‘If you believe you may have seen this man enter the river around 9.50pm on Friday, or noticed anybody who fits the description who was in the vicinity beforehand, to please get in touch and tell us what you saw.
‘Following our initial appeal we have received information from the public that the man is believed to have a dragon tattoo on the right of his chest.
‘If anyone recognises him from these images, or the descriptions we have provided, please get in touch immediately.’
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