According to Southold Town police, a call came in Thursday at 2:04 p.m. about CPR in progress on a child, 6, who had reportedly drowned in the pool at the resort.
Hotel staff confirmed Thursday that the child was a boy.
Southold police and the Greenport Fire Department responded to the scene, where the lifeguard on duty, Michale Liegey, had started CPR on the child and was able to help him to begin breathing again, officials said.
When the child was transported to Eastern Long Island Hospital by emergency personnel, he was breathing and conscious, police said.
No further information was immediately available about the child's condition.
"The safety of our guests is top priority here at The Cliffside Resort. We commend our entire staff for perfectly executing our emergency response plan and wish the young boy a speedy recovery," said Thomas Herrmann, general manager.