A shark attack survivor has described the terrifying moment he was mauled by the predator and revealed how he escaped.

Steve Bruemmer was swimming off the coast of central California last month when he was attacked by a shark.

The 62-year-old recalled how the weather was "beautiful", the sea was "so calm" and he was "gliding through the water" back to the shoreline when the mighty finned carnivore took him totally by surprise.