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Sea Jellies

Sea Jellies
Other Common Name(s)
Jellyfish
Body Length

The largest species, Lion’s Mane Jellyfish (Cyanea capillata), can have tentacles reaching about 36m. The tiniest species are less than 2cm long.

Body Weight

Some species can exceed 200 kg

Distribution
Circumglobal from tropical to polar waters
Fun Facts

Fun Facts

  • Sea jellies appeared before dinosaurs. They have been living on Earth for over 650 million years.

  • The tentacles of sea jellies are used for feeding and defense. With cells containing barbs and venom, these body structures can sting and kill their prey. One of the most venomous species, sea wasps (Chironex fleckeri), can kill a human in a few minutes.

Threats & Conservation

Sea jellies are important members of the marine food web as they act as predators and preys. Climate change and pollution has altered the population sizes of some sea jelly species, thus affecting other members of their ecosystem.

Avoid using disposable plastic products to reduce marine debris!

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Sea Jelly Spectacular
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