Meet the marine worm with 100 butts that can each grow eyes and a brain – Livescience.com

How many butts is too many? One is usually enough for most animals unless you’re a type of marine worm with a body that divides from a single head into dozens of different directions, and each of those branches ends in a butt. 
The worms’ weirdness doesn’t stop at multiple butts, either. When the worms are ready to reproduce, their butts can grow eyes and a brain. 
At this point, you probably have questions; unsurprisingly, scientists did, too. So they peered inside the branching bodies of this…

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