A pair of surfers had a lucky escape after two gigantic killer whales were spotted swimming just feet away during a Norwegian surfing competition.
Footage shot from the shore initially shows competitors in the Lofoten Masters riding the waves in the icy waters of northern Norway.
But spectators quickly spot two black fins poking menacingly out of the water, swimming alarmingly close to the competitors.
One surfer , wearing a red wetsuit, spots the enormous creatures and begins to wave frantically for help as they circle the helpless pair.
He then turns around and paddles desperately away from the deadly animals, and thankfully both surfers escape unharmed.
It is rare, but not unheard-of, to see the mammals swimming so close to the shore.
Wild killer whales - also known as orcas - are usually not considered a threat to humans.
But over the years there have been a number of well-publicised deaths and injuries to humans caused by captive orcas.
Killer whales, which are found in each of the world's oceans, are known to hunt fish and marine mammals, such as dolphins and seals.
Males typically range from six to eight metres in length and weigh in excess of six tonnes each - with females usually growing slightly smaller.
The largest orca on record was almost 10 metres long, weighing more than 10 tonnes.
Each whale has an enormous row of sharp teeth, which are capable of tearing human flesh.
In May it was reported killer whales had even resorted to attacking great white sharks off the coast of South Africa, although this is highly unusual.