Hundreds of thousands of rare purple jellyfish have washed up on on a British beach.<br /><br />The 'Mauve Stingers' are only small - but capable of a powerful sting and glow brightly at night if disturbed.<br /><br />The jellyfish were spotted washed up at Porth Hellick on St Mary's on the Isles Of Scilly. <br /><br />The species are uncommon close to UK shores.
