It transpired, however, that the man had swum ashore some distance along the beach, then walked about 100m to a friend's home.
"We asked him if he was aware that everyone had been out looking for him but didn't get much of a response," Ross said.
The man, who appeared to be affected by alcohol, did not seem to be any the worse for his experience, he added, although his slightly aggressive response to his would-be rescuers could have been a symptom of mild hypothermia.
"He had no real explanation," the police spokesman said, adding that the incident had been a "wasted three hours" for the emergency services.