RNLI crews in Dartmouth used two flares last night as part of a search around Leonards Cove.
They were called just before 6pm, following reports of a floating object.
Nothing was found and we're told the search will resume this morning
A spokesman said: "Dart lifeboat was tasked earlier this evening after a sighting of an unidentified floating object at Leonards Cove was reported.
"The lifeboat did a thorough search of the area.
"Coastguards put up two flares to aid the search in diminishing light.
"Nothing was found.
"Dart lifeboat will resume the search tomorrow morning."