Two scuba divers came across an incredible scene when they spotted a jellyfish that was as large as a person.
Lizzie Daly, a wildlife biologist and Swansea University Fellow, was exploring the waters off the southwestern coast of England when a barrel jellyfish appeared.
Daly explained in her video that she'd never seen a barrel fish or any jellyfish that big and it was the same size as her.
"Out of the murky water came this gentle giant. It was incredible. It was like a massive boiled egg," Daly described in an interview with CNN about the human-sized jellyfish.
The barrel jellyfish is the largest jellyfish found in the waters around the United Kingdom and typically can grow up to nearly 3 feet in diameter, according to The Wildlife Trusts.
And while coming across such a big jellyfish would surely surprise anyone, Daly told the Guardian it was "such a serene, grounding experience" to swim alongside the "gentle giant."
"I don't want you to take away, 'oh that's a scary thing,' it's not. It's majestic," she said to CNN.