Fish Have Learned to Use Humans as Tools And It's Working

Added: 2026-06-07

[00:00:00]Fish have learned to use humans as tools and it's working. When divers collect sea urchins, they crack one open and toss it to nearby fish. Seems generous, but it's actually a deal. Fish can't break open urchins themselves, so they guide divers straight to the biggest piles. The divers fill their basket, the fish get fed, everyone wins. But parrotfish [music] took this a step further. These fish are farmers, they grow algae gardens, weed them daily, [music] and defend them from intruders.

[00:00:23]Their biggest pest? Sea urchins. Urchins eat the roots and destroy everything.

[00:00:27][music] Parrotfish can toss them out, but dozens return by morning. So now, when a parrotfish spots [music] a diver, it doesn't run. It swarms them and leads them directly to its garden. The diver clears the urchins, the garden survives.

[00:00:38]The fish didn't just learn to coexist with humans, [music] they domesticated us. So, follow for more wild ocean behavior that'll make you question who's really [music] in charge.