Thousands of jellyfish both dead and alive have been found washed up on the beaches of Cornwall. Mauve Stingers, also known as Pelagia noctiluca, aren’t lethal to humans but their sting can be ...

As swarms of brown ‘snotty’ jellyfish wash up on our pristine coastlines, a SeaWorld expert reveals what they are doing here and why they make a perfect snack for other creatures. VIDEO.