He has been identified as Adam Langwell, and was found in Whitley Bay, North Tyneside, at about 8.20am on Saturday.
Police said the death of the 25-year-old from Whitley Bay was being treated as "unexplained".
They said his next of kin had been informed.
A Northumbria Police spokesperson said: "Officers are carrying out enquiries into the incident and the death is currently being treated as unexplained with a post-mortem arranged for tomorrow."
Anyone with information regarding the death is being urged to contact authorities.
Police can be contacted by calling 101 and quoting reference number 247 30/12/17.