The man missing off the Donegal coast is Anthony Tony Griffiths, from the Culmore area of Derry, Gardai have confirmed.
Mr Griffiths (59) was reported missing yesterday morning by his family with whom he had been camping in the Isle of Doagh in Inishowen.
Malin Head Coastguard and the Gardai are co-ordinating the search with Lough Swilly RNLI assisting.
Locals are also helping by conducting a shore search also.
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