Clues to the a jellyfish's deadly sting may lead to an antidote.
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A group of amoeba-shaped creatures could be the closest living surrogate to the ancestor of all animals.
A "jellyologist" explains the mysteries of large swarms of jellyfish that can cover hundreds of square miles of ocean.
Here's lookin' like you, babe. Jellyfish have many eyes that serve different purposes. One set works like ours.
Squid, jellyfish and other cephalopods are thought to be pretty efficient at getting around. So scientists are copying their natural designs.
In a region off the west coast of Africa, jellyfish are taking over. Similar scenarios play out around the globe.