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Giant jellyfish have invaded the northern coasts of the Japanese islands and they're causing problems. Frustrated local fishermen are hauling in little else. So one...
With no brains, no heart, and no blood, it's amazing jellyfish have existed for 650 million years! See All National Geographic Videos video.nationalgeographic.com
The BOX JELLYFISH is Australias invisible but deadly supreme marine predator. A frightening death follows a sting from this amazing creature. Chironex Fleckeri is the...
