BBC news reports:
The diver whose body was recovered off the Donegal coast was a serving constable, Humberside police have confirmed.
He had been on holiday in Donegal at the weekend when he got into difficulty and failed to surface from a dive.
Two lifeboats, two helicopters and other vessels were involved in the operation 16 miles north-west of Tory Island in the Atlantic Ocean.
His body was located on Monday by other divers who were his colleagues.
The man, whose name has not been released, was one of seven people deep-sea diving 26km north-northwest of Horn Head.
He is believed to have been using an oxygen set known as a rebreather which provides a breathing gas containing oxygen and recycles exhaled gas.
A spokesman for Humberside Police said: "The family of the missing police constable have been informed and Humberside Police continue to offer them support during this very difficult and traumatic time."