A Cambridgeshire scuba diver has gone missing while exploring a wreck.
The 54-year-old was part of a group diving around the wreck of a cargo ship on the west coast of Scotland.
The Coastguard received a call from the dive boat yesterday (Tuesday) saying one of the group was missing.
The search was stood down late last night without finding the diver, but started again earlier today.
The man, who has not been identified but who is from Cambridgeshire, became separated from the others while exploring the wreck Breda in Ardmucknish Bay near Oban, Argyll and Bute, the Maritime and Coastguard Agency said.
His friends raised the alarm when he failed to surface.
A Royal Navy rescue helicopter from HMS Gannet in Prestwick, Ayrshire, made its way to the scene to join a lifeboat search while Coastguard rescue teams were sent to the shoreline area to see if the diver had made his way back to shore.
A search was conducted by Strathclyde Police, Oban RNLI, HM Coastguard and Navy divers until nightfall.
The search, which includes sea and land, will continue throughout the day,
The Breda was a Dutch steamer which was sank after being attacked by a German plane in 1942.