Monster Or Majestic? Check Out These Ocean Giants

An enormous jellyfish is making waves world-wide after being filmed swimming alongside a diver off the coast of the UK.

It was just off the coast of Cornwall on Saturday when biologist Lizzie Daly spotted the largest barrel jellyfish she'd ever seen. Pictures of the encounter show the jellyfish nearly as long as she is.

Lizzie Daly swims with giant jellyfish. Photo: Wild Ocean Week

It floats the question: what other ocean giants are lurking in the deep?

A popular creature for divers to seek out is the Giant Manta Ray. They’re among the largest fish in the world, measuring up to nine metres in width.

An animal found are greater depths is the Bluntnose Sixgill Shark, a deep sea predatory species that outdates many dinosaurs.

Photo: Getty Images

Earlier this week, researchers from OceanX successfully used a submarine for the first time to tag a female shark of this species.

It’s an insight into one of more than 450 known species of shark, the largest of which is the Whale Shark. Despite its size, this gentle giant only eats fish eggs and plankton.

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In another win for ocean researchers, a Giant Squid was spotted off New Orleans by the Ocean Research and Conservation Association. The animal measured just under four metres long.

A giant squid captured on camera. Photo: Ocean Research & Conservation Association

However, the real heavy hitter in a sea of fish is the Ocean Sunfish, known for swimming on its side. It is the world’s heaviest bony fish and can weigh up to 2.3 tonnes.

While these images spark curiosity, they also raise awareness of ocean creatures that could be threatened by commercial fishing, pollution and rising water temperatures.

The World Wildlife Fund suggests there are ways to support these animals including through limiting waste and supporting ocean conservation projects.