A Florida couple was rescued Saturday morning after falling off their boat and treading water for over 14 hours.

According to Reuters, Sean McGovern, 50 and Mellisa Morris, 52 were rescued and pulled from the water by a group of off-duty public safety workers.

CNN reported that authorities said the pair fell off their boat near Key Largo around 6 p.m. Friday. They were spotted and saved around 8 a.m. the following day.

"They are very lucky — they didn't have any signal device," said U.S. Coast Guard spokesman Mark Barney. "They were trying to signal people down with their T-shirt. To be located and recovered by off-duty cops and a firefighter — that's a stroke of luck right there."

The rescuers originally thought the duo splashing around in the water were fish until they got closer.

The group spotted the couple seven miles offshore near Fort Lauderdale. The rescuers said that the two were exhausted from drifting several miles and treading water for more than 14 hours.

McGovern said that he had been stung by three or four jellyfish. He and Morris both also appeared to have mild hypothermia.