Killer whales have been filmed ramming a sailing boat and breaking its rudder in terrifying footage with the crew left stranded at sea.
The boat was sailing off the coast of Fisterra, in north-west Spain, when it was surrounded by three deadly whales which were circling it.
Then footage taken from the stern of the boat, that was heading from Vigo to Sada, showed the whales start to bash the vessel.
