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Source: National Geographic Kids


* Baby Nomura’s jellyfish change from the size of a grain of rice to the size of a washing machine in six months or less.

* Jellyfish are 95% water.

* Jellyfish aren’t actually fish, they’re invertebrates—animals without backbones.


Are aliens attacking the Sea of Japan? Not exactly. 

But these gigantic blobs are unwelcome visitors from another place. Called Nomura’s jellyfish, the wiggly, pinkish giants can weigh up to 204 kilograms – as heavy as a lion.

The supersize sea creatures – normally found off the coasts of China and North and South Korea – occasionally drift east into the Sea of Japan to feed on tiny organisms called plankton. 

But now one hundred times the usual number of jellyfish are invading Japanese waters. And local fishermen are feeling as if they are under siege.