Daly was diving off the coast of Cornwall in Britain when she said she saw something large in the distance and did a double take.
“What an unforgettable experience,” Daly wrote in an Instagram post. “I know barrel jellyfish get really big in size but I have never seen anything like it before!”
Abbott and Daly were diving as part of “Wild Ocean Week”, a fundraising campaign for the Marine Conservation Society of the United Kingdom created by Daly, that was meant to document various marine species off the coast.
“Neither of us have ever seen a jellyfish that big before,” added Abbott. “It was an incredible and humbling experience.”
Barrel jellyfish start out small – about a millimeter in length and can grow up to 3 feet in length. They can weigh approximately 55 pounds when grown.
Daly said she was not scared when she swam next to the jellyfish and hopes the video inspires others to get excited about the ocean.
“Get in the water, grab a snorkel mask,” Daly said. “Just go for it to see what’s out there.”
Photo and video: Dan Abbott