Police are appealing for video or photographs of a coastal area in connection with their search for a missing 90-year-old sailor.
Arthur Roy Taylor, known as Archie, was last seen at 9.30am on Saturday, when he left his accommodation to take his dinghy out from Gwbert boat club, Ceredigion.
Milford Haven Coastguard and the RNLI launched a large air and sea search after they were alerted that he had not returned that evening.
The search is being coordinated by Dyfed-Powys Police, who have appealed for anyone with information to come forward.
A force spokesman said: "Police are especially seeking any video or photographs taken by members of the public of the coastal area around the sea off Gwbert yesterday morning as they may have captured him sailing."
Grey-haired Mr Taylor, who is 5ft 4ins tall and of slim build, was wearing a navy jumper and a dark grey waterproof jacket.
Coastguards were contacted at 5.15pm on Saturday when Mr Taylor failed to return home following a trip on the water during the day.
Mr Taylor's small boat was found in Cardigan without anyone on board.
The coastguard rescue helicopter from Caernarfon attended, along with rescue teams from Caernarfon, Cardigan, Gwbert and Moylegrove.
RNLI lifeboats from Cardigan and Fishguard were also involved, as well as Dyfed-Powys Police.
Earlier, a Coastguard spokesman said: "The follow on search this morning at Cardigan for a missing dinghy sailor has now ended with nothing further found.
"Coastguard rescue teams only will be making a shore line search this evening at low water at 6pm."
Sightings or information can be reported to police by dialling 101 and quoting incident reference 251 of April 15.