Police are treating the attack on the 23-year-old as attempted murder.
Kayak found in search for missing Scots adventurer
A kayak believed to be that of a missing man has been recovered from the sea.
A major search has been under way for Dominic Jackson, 35, who was reported missing on Sunday night after he failed to return from a sea-kayaking trip in Portsoy, on the north coast of Aberdeenshire.
Mr Jackson had travelled north from his home in Fettercairn, south Aberdeenshire, on Friday, and his green VW Transporter has since been traced in the area.
Land, air and sea searches have been carried out, involving police, coastguards and the RNLI.
Police said a kayak thought to belong to Mr Jackson has now been recovered from the sea in the Wick area, and they are carrying out inquiries to confirm who owns it.
On Monday Mr Jackson's family appealed for information as they assisted search and rescue teams trying to trace him.
In an appeal through Police Scotland, they said: "We are desperately worried for Dominic and would urge him to make contact with his family or police to let us know he is okay.
"This is completely out of character and we just want him home.
"We would also like to thank local people who are assisting with the search.''
He will have a private meeting with the monarch at the Palace of Holyroodhouse on Wednesday.
The most recent figures for GDP in Scotland showed a fall of 0.2% over the period of October to December at the same time as the UK economy grew by 0.7%.
The second meeting of a Ministerial Working Group to examine building and fire safety regulatory frameworks was held on Wednesday.
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