From Science Magazine.

If you happen to see a friend across the street, odds are you might raise an arm and wiggle your hand to say hello. Cuttlefish apparently do something similar—and that’s not the only arm gesture they use to communicate, according to a 2025 bioRxiv preprint.

Learn more: https://scim.ag/3OJDZYf

FOOTAGE CREDIT: SOPHIE COHEN-BODÉNÈS, PETER NERI

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