Two men went out late Sunday afternoon to kayak on the Nissequogue River.
Instead, police said, they ended up stuck in the mud.
Suffolk County police said that the mother of one of the men called 911 at about 11 p.m. to report them missing.
An aviation unit and other searchers were dispatched -- only to find the men just before midnight walking back to the dock they had left from.
Police did not identify the pair, describing them only as two 25-year-old men.
Police said the two left at about 5:30 p.m. to paddle north to the Kings Park bluffs, where they were supposed to meet someone to drive them home.
Instead, they never met up with their ride and, police said, they tried to paddle back -- only to become stranded.
Tidal charts show there was almost 8 feet of water in the river at high tide, which was at 3:36 p.m. Sunday. At low tide, which was at 9:01 p.m., there was only a matter of inches.