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We're ready to answer your questions about the Lion's Mane Jellyfish, the world's largest jellyfish!
We can be found almost anywhere in the sea, but nobody knows how many of us there are.
381 Mbp (Megabase pairs)
Eumetazoa, about 824 million years ago
I should be sequenced because...: My population might be growing too fast thanks to human activity, but we don't know for sure. Help scientists find out by voting for us!
Tell us more...:
Many species are struggling with what humans are doing to the planet, whether its pollution, habitat loss or too much hunting/fishing. Us jellies are loving it though! Humans are making world domination so easy:
– Overfishing means we have fewer predators and it might damage places our prey uses to hide
– We can live in areas with lower oxygen caused by pollution
– Changing climates mean we can spread much further around the world than we used to
– More boats means we’re more likely to accidentally get moved to other parts of the world
– Our babies cling to hard surfaces. Humans keep putting more of these in the ocean!
Click here to vote for me and help scientists find out how to stop me:
One sentence about me...: Hey there! I'm a Lion's Mane Jellyfish, but you can also call me by my other names - the "giant jellyfish" or the "hair jelly"!
Like other jellyfish, I get around by jet propulsion, which is a cheap and easy way to move underwater. In fact, jellyfish have been proven to be the most efficient swimmers of the animal kingdom! Also like many other jellyfish, I have venomous stingers, so it’s probably best to avoid hugging me! I like to live in cold, salty water and you can find me floating around in the English channel, but with climate change causing sea temperatures to rise and more storms, where will I end up? That’s for scientists to discover!
Some fun facts about me:
Ocean giants – I’m the biggest jellyfish in the world. For a while I was even thought to be the longest living animal on earth, because of my tentacles which can grow up to 37m long – that’s longer than 3 buses put together!
The game is afoot! – I’m famously the culprit of a Sherlock Holmes story: “The Adventure of the Lion’s Mane”
Harpoons at the ready! – I have between 520 and 1200 stinging tentacles, which can keep stinging even if I get washed up onto the beach. Each tentacle has tiny little harpoons which fire and inject venom when they touch something. Check out the photo of one below!
Thanks for reading about me, don’t forget to vote!
How would you describe yourself in 3 words?
Blob with tentacles!
What's it like where you live?
Cold and wet!
What's your favourite food?
Zooplankton, small fish and other jellyfish!
What's your family life like?
I rely on ocean currents to bring my family together as we live all over the place!
Are you endangered or threatened by anything?
No, but I do get eaten by birds, sunfish and turtles!
What's the best thing about you/interesting fact?
I’m the biggest jellyfish in the world, with tentacles sometimes longer than a blue whale!
The champion of this species is...
Zak and Alex (PhD students at Leeds University studying biomechanics)