A free diver off the coast of Wales in the UK has spotted a giant jellyfish that he says is "the length of a bus" and about 10 to 15 meters long.

A free diver off the coast of Wales in the UK has spotted a giant jellyfish that he says is "the length of a bus" and about 10 to 15 meters long.

Eastin Morgan, an environmental campaigner who records videos for social media to raise public awareness of "threats to our sea surface", said it was the first Yellshiri jellyfish he had ever seen in Wales.

A marine biologist said the species, which is mainly found in colder waters around Scotland, is not considered dangerous to humans despite having a "painful and unpleasant" sting.