A lifeguard at the Surf Club of Quogue said the man was standing in a few feet of water when he suddenly collapsed in the surf.
The lifeguard, who declined to give his name, said a paramedic treating the man said he could have suffered a stroke.
Contrary to earlier reports, authorities said a middle aged man was pulled from the surf at the Surf Club of Quogue shortly after 4:30 p.m. Thursday, possibly after suffering some sort of medical condition, according to Quogue Village Police Lieutenant Chris Isola.
Lifeguards managed to pull the unidentified man, who had a pulse, from the water, Lt. Isola said.
He received medical attention at the scene and was then transported by ambulance to the Peconic Bay Medical Center in Riverhead.
A 6-year-old child was pulled from the ocean at the Surf Club of Quogue on Thursday afternoon.
Paramedics were called to the Dune Road club at around 4:30 p.m., and initial reports noted that the child had a pulse, though advanced life support services had been requested.
His condition was not immediately known.
A crew with the Westhampton War Memorial Ambulance was on scene as of 4:45 p.m.
Additional information will be provided as it becomes available.