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This is how jellyfish can sting you without even touching you

Life 13 February 2020 By Clare Wilson The upside-down jellyfish creates “stinging water” to kill its preyPete Oxford/Naturepl.comMost people know not to poke a jellyfish, but some jellies can sting you without touching you – by detaching tiny bits of their body that float off into the sea and move around independently. Upside-down jellyfish jettison…



Life



13 February 2020

By Clare Wilson

New Scientist Default Image

The upside-down jellyfish creates “stinging water” to kill its prey

Pete Oxford/Naturepl.com

Most people know not to poke a jellyfish, but some jellies can sting you without touching you – by detaching tiny bits of their body that float off into the sea and move around independently.

Upside-down jellyfish jettison small balls of stinging cells in a network of sticky mucus, to kill prey such as shrimp. The jellies then seem to suck in their dinner by pulsating.

It is as if we could spit out our teeth and they killed things for us somehow, says Cheryl Ames at Tohoku University …

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