Patrick O'Flaherty, a Newfoundland writer, historian and teacher, is the man who went under during a swim in a Bonavista Bay pond Wednesday, CBC News has confirmed.
RCMP divers are still searching Barbour's Pond near Keels Friday for the 78-year-old man, last seen Wednesday afternoon.
O'Flaherty, who also taught at Memorial University, was at the popular swimming pond with three others, including his wife, sources said.
Police said four adults had been swimming and were returning to shore when the man went under the water.
Bonavista RCMP, the fire department and paramedics responded to the call 4:30 p.m. Wednesday.
Divers with the RCMP Underwater Recovery Team found nothing during their search Thursday.
O'Flaherty has a summer home in nearby King's Cove and is well known in the area.
His books include analyses of Newfoundland political history, as well as novels and short stories.