Dolphins swam alongside a lifeboat as it towed a yacht which had got into difficulty off the Co Antrim coast.
Two men were rescued in the drama which unfolded on Wednesday afternoon when their 30ft yacht's propeller got caught on fishing nets near Muck Island, a small outcrop off the coast of Islandmagee.
It's understood the two men onboard were unharmed in the incident.
Larne RNLI lifeboat crew sailed to the scene and set up a tow line.
As it was towing them into Larne Harbour, dolphins swam alongside, captured in footage taken by the crew.
Roy McMullan, Larne RNLI deputy launching authority reminded anyone taking to the sea this summer to respect the water.
He said: "Sailing and motorboating are popular pastimes, particularly at this time of year.
"We would encourage sailors to always wear a lifejacket and always have a means for calling or signalling for help and ensure everyone onboard knows how to use it."