A 14-year-old boy was swimming in the ocean off Far Rockaway in Queens Sunday evening when he ran into trouble in the rough waters and drowned while his mother was waiting for him on the beach.

The tragedy occurred near Beach 75th Street around 5:45 p.m. Sunday after the beach had closed early because of bad weather.

Traumatized eyewitnesses who saw the boy after he was brought ashore described him as foaming at the mouth and “blue from head to toe.”

The boy had found himself caught in stormy seas and was underwater for several minutes before a retired lifeguard visiting her friend, who is an active lifeguard, was alerted to the emergency and jumped into action.

“They started blowing the whistle like crazy,” Basia Lewandowski, the ex-lifeguard, told CBS New York. “It’s something we call case whistles, long whistles or emergency whistles.”

Lewandowski’ lifeguard pal and others dove into the waves to reach the boy, while she was acting as her friend’s point person on the beach.

The rescuers were able to reach the child in the water, but by then it was too late.  

“He was foaming. He had a lot of water. He was in there for four or five minutes,” Lewandowski said.

The 14-year-old’s distressed mother was waiting for him on the shore.

“She said, ‘My son, my son, my son.’ And she just went into praying, and I prayed right there with her,” witness Sharon Grant told the station WPIX11, adding that the teen looked “blue from head to toe” when he was carried out of the ocean. “It was so traumatic for everyone, even the lifeguards. They were crying.”

First responders were called in and tried to revive the boy with CPR, before taking him to the hospital, where he died.

The Parks Department said there were no lifeguards on duty at the time of the drowning because the beach had closed early, at around 5 p.m., due to thunder and lighting, as per protocol. Red flags had gone up warning beachgoers of unsafe swimming conditions.

“When we have thunder, we close the beach,” Lewandowski said. “It was all proper. [Lifeguards] didn’t have to be on the beach.”

The 14-year-old victim has not been identified as of Monday, and there was no immediate word from officials on the exact circumstances of the drowning.

City beaches reopened at 10 a.m. Monday.