#GreatAdaptations Surely, this qualifies for the hashtag. And they do it with no movable limbs underwater.
1/4 Five more species of tool-using wrasse discovered

This is the first time they have been documented in the western Atlantic.
They use various substrates (e.g., from coral to rubble) to strike their prey against.

(paper) link.springer.com/article/10.1...

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