Why Do Fish Swim in Schools?

Fish swim in schools like kids playing tag, they all move together to make it easier to find food and avoid getting caught by bigger fish. When one fish turns, the others follow quickly, making a big, moving group that's harder for predators to catch.

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Examples

A school of tiny fish, like sardines, all swimming together as if they're one big creature.
A single fish turns suddenly, making the entire group change direction in an instant.
Big fish like dolphins chase a whole school of fish at once, it's harder to catch them all.

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Categories: Biology · fish behavior· schooling· marine biology· animal groups· swarm intelligence