The search off the coast of Co Donegal for a missing diver is expected to continue on Monday.
The diver, who is a Canadian national, was part of a group who were diving about 27km north of Fanad Head Lighthouse on Saturday.
The group was diving around shipwrecks in the area.
Malin Head Coast Guard station received contact at about 4pm on Saturday that the diver was missing.
The Lough Swilly RNLI lifeboat and the Irish Coast Guard Rescue 118 helicopter, supported by a number of local boats, searched for the diver for several hours on Saturday.
The search was stood down as light faded on Saturday night, but resumed again at 6am on Sunday.
Specialist vessel
The Lough Swilly RNLI lifeboat, the Rescue 118 helicopter, and the Portrush RNLI lifeboat were involved in Sunday’s search effort.
A specialist dive vessel arrived on site at 2pm on Sunday and a number of divers searched the area where the missing diver was last seen.
A further dive co-ordinated by the specialist vessel took place on Sunday evening.
Spokesman for the Lough Swilly RNLI lifeboat, Joe Joyce, said: “We have still not located the diver, but we have not recovered anything from our surface search.
“Divers have searched a number of areas and we will now take direction from Malin Head Coast Guard as to what direction the search will go in.”
Mr Joyce said they had still not established what had happened to the diver.
“We have no information as to what happened. All we know is he did not resurface.”