( CNN ) -- Some off-duty public safety workers ended up with an unusual catch when they went fishing off the coast of Florida Saturday morning . They found a man and woman splashing in the water 7 miles from shore who said they 'd spent the last 14 hours treading water , the Broward County Sheriff 's Department said . Sean McGovern , 50 , and Mellisa Morris , 52 , said they 'd fallen off their boat in Key Largo about 6 p.m. Friday . The boat was in gear , and they watched it pull away from them , the sheriff 's department said . `` They are very lucky â€ ” they did n'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 â€ ” that 's a stroke of luck right there . '' About 8 a.m. Saturday , two Broward sheriff 's office detectives , a Broward firefighter and one of the men 's father-in-law noticed splashing in the water from their boat , the sheriff 's department said . `` We saw birds diving , '' said Adam Lee , a detective . `` As we got closer , I saw fish jumping . We saw a white male with his shirt flagging us down . '' The men pulled McGovern and Morris onto the boat . They were exhausted after drifting 10 nautical miles and appeared to have mild hypothermia and jellyfish stings , the sheriff 's department said . `` We checked them out , made sure they were stable , '' Lee said . The fishermen passed them over to the Coast Guard , which carried them to the Fort Lauderdale Coast Guard Station . Friends picked them up there . `` A lot of people do n't wear life jackets because they do n't have intention of being in water , '' Barney said . `` It was a miracle they were able to tread water that long and were safely recovered . '' Lee summed it up : `` They 're pretty lucky . ''
Man and woman said they fell off a boat off Key Largo . They were found by fishermen 7 miles off the coast . The heroes included two off-duty Broward County detectives , one firefighter .