Astonishing footage shows the moment a group of divers launched a brave rescue effort to save the life of a freediver who suffered a blackout 410 feet below the water's surface.

Miguel Lozano, a Spanish professional freediver, was trying to break the World Record for the deepest dive when he lost consciousness.

Video, believed to be filmed in the Caribbean, shows a team of five divers swimming towards Lozano before working together to push him upwards in a rescue effort that the freediver commended as 'impeccable'.

Lozano, who wasn't carrying a cylinder with compressed air, had managed to hold his breath long enough to reach 410ft below the water's surface - only 6ft short of the World Record - when he blacked out.

Video shows Lozano's body becoming limp and another diver quickly covering the freediver's mouth so that he couldn't inhale water while unconscious.

A second diver was seen swimming quickly towards them to keep Lozano's body upright as they pushed upwards towards the water's surface.

A third member of the rescue team then unclipped Lozano's lanyard, which had been attached to a line that was being used to help with navigation, while two more divers joined in to help push Lozano upwards.