Invasion of 'giant jellyfish' at Dorset beach

Swarms of huge barrel jellyfish have been washing up on our shorelines across the South due to an unexplained rise in the species.

Now, many have been spotted at the National Trust's Knoll Beach at Studland.

Scientists believe the increase of the big stingers is down to a lack of predators and a warmer climate.

Barrel jellyfish, actually called Rhizostoma pulmo, are the largest species of jellyfish in Britain and some can reach 90cm, which is around the size of a lorry tyre.

The National Trust say they have recognised a rise in the jellyfish on the beach but say it is not a cause for concern.