An incredible picture shows a diver off the British coast swimming with a huge barrel jellyfish - that was "as big as a him". Dan Abbott was filming marine life around the coast with biologist Lizzie Daly, host of BBC Earth.
On the last leg of their tour of the British Isles, the duo went for a dip off the coast of Falmouth, Cornwall, and spotted the massive jellyfish.
Dan said he was completely awestruck by the mammoth stinger and took a picture of Lizzie alongside it to demonstrate just how big the jellyfish was.
Dan, an underwater cinematographer from Colchester, Essex, said the jellyfish was "about a metre and a half long, probably half a metre in width."
The 32 year- ld said, "It's the biggest jellyfish I've ever seen. In some ways I was shocked but not in a negative way, more awestruck.
Dan Abbott was filming marine life around the coast with biologist Lizzie Daly, host of BBC Earth Photo: SWNS)
"It was an incredible animal, we both came out the water completely mind blown from that experience."
'There's plenty of marine wildlife on our doorstep'
Dan and Lizzie had spent a week travelling to hot spots for marine life around the British isles on a trip called Wild Ocean Week.
They swam with grey seals off the Farne Islands, off the coast of Northumberland, minke whales off the north west coast of Scotland, and seabirds off Wales. The pair saw the huge barrel jellyfish on Saturday 13 July.
"The thing that this whole week has been about is demonstrating that you don't need to go to the other side of the world to see amazing marine wildlife, there's plenty on our doorstep," said Dan.
"It was myself and Lizzie Daly, that's the person in the photo, we travelled all around the UK to various different marine hot spots.
"The final leg was in Cornwall where we went for a dive where we encountered the enormous barrel jellyfish.
"Cornwall was nice and warm for diving, and because of the jellyfish that was my favourite part but it's all been good, each one has been very special."
During their trip, Dan and Lizzie raised money for the Marine Conservation Society.
Pictures and footage they collected will be uploaded onto Lizzie's social media channels.