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Now that’s using your head: a sea slug’s severed noggin sprouts a new body

A green sea slug with black and white spots and orange antennae and frill, with the head severed from the body.

The detached head (left) of the sea slug Elysia cf. marginata can regrow its body in less than a month. Credit: Sayaka Mitoh

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Nature 591, 348 (2021)




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