An exhausted teenage boy was saved from drowning in rough Mediterranean seas after coastguards used a drone to drop him a lifejacket.

The amazing rescue was captured on video footage shot off the coast of Puerto de Sagunto, Valencia Province, Spain on Friday, 1st July.

The 14-year-old swimmer had gone into the sea despite a yellow warning flag flying on the beach showing high waves and dangerous undertows.

He quickly found that strong currents made it impossible to swim back.

The footage shows the teen clearly exhausted as wave after wave crashes over his head.

Then he notices the drone hovering overhead with a yellow lifejacket on a line.

Struggling, the boy grabs the life vest and holds on tight until two lifeguards arrive on a jet ski towing a floating stretcher with a woman already on it.

One of the lifeguards leaps into the water and grabs hold of the boy – who had begun to swallow seawater – while his colleague tows the woman to safety.

After the teen was brought ashore, he was taken to the public hospital in Puerto de Sagunto, where he spent the night and was discharged the next day.

The municipality of Sagunto – of which Puerto de Sagunto is part – has been using drones for surveillance and rapid response operations since 2017.

Mayor Dario Moreno said: “Since June we have already carried out five interventions, airdropping life jackets, while buying time for rescuers to reach the scene of the event.”