A big wave surfer has escaped a potentially life-threatening wipeout thanks to a "heroic" rescue.
Salvador Villas Boas was surfing a huge wave at Praia do Norte in Nazaré, Portugal when he was thrown off his board in a dangerous area near a gathering of rocks.
Footage of the wipeout shows Villas Boas resurfacing in the dangerous impact zone after hitting the water at nearly 80 km/h as another massive wave started gathering momentum.
This is when Ramon Laureano, who had been following Villas Boas from behind the wave, came in on his jetski to save the stranded surfer just in time, with the duo eventually outrunning the wall of whitewater for long enough to escape the most dangerous area of the beach.
Surf photographer Pedro Miranda, who filmed the scene, said the rescue was "a matter of life and death".