A free diver has said he "couldn't believe his luck" after spotting a giant jellyfish off the Welsh coastline. Iestyn Morgan said the lion's mane was the "length of a bus" with a size of about 10 to 15 metres (32ft 8in to 49ft 2in). The jellyfish was so big the tentacles went "beyond the range of visibility". The 21-year-old conservationist, who records footage for social media to raise awareness about the "threats our seas are facing", said it was the first lion's mane he had seen in Wales. #BBCNews #Oceanlife #Jellyfish #Conservation #Wales