Add Yahoo as a preferred source to see more of our stories on Google. Male stolon (right hand side): one of the independent reproductive units of a branching marine worm, growing at the tip of a ...

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For some worm species, decapitation is no big deal — they just grow a new head. But far from this superpower being an ancient skill, a recent study suggests that this ability is a relatively recent ...

They're toxic. They can regenerate. They're nearly impossible to kill. And the footprint of the hammerhead worm is growing across the United States.

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