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Book 4, Question 104 · Video

Why Do Some Fish Swim in Schools?

Video · 1:58 · Crafty Clover explains, from A Million Whys Book 4

A school is a moving crowd of fish! Many eyes spot danger, and the group can twist together, so a hunter has a harder time picking just one fish. There's safety in numbers.

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What Crafty Clover says in this video

Intro

Hey there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do some fish swim in schools?

The Big Idea

A school is a moving crowd of fish! Many eyes spot danger, and the group can twist together, so a hunter has a harder time picking just one fish. There's safety in numbers.

Many Fish Gather

Step one: many fish gather. Fish swim close together, and form a crowd. Minnows in a creek do this too, not just fish in the ocean. With more fish, there are more lookouts, and many eyes spot danger sooner.

Side Lines Feel

Step two: their side lines feel the water. Fish have a sideline along their bodies that feels movement in the water. That sense helps them match speed and turn without a meeting. They feel their neighbors' moves, like a team that can dance without talking.

Group Turns, Hunter Misses

Step three: the group turns, and the hunter misses. When danger comes, the whole school turns together. A tight ball can look like one big confusing shape, so it's hard to grab just one. The school swims away safe, and the hunter goes hungry!

A Closer Look

Let's take a closer look at a school! Minnows swim together, with many eyes watching. Each fish has a sideline that feels its neighbors. And when the hunter's shadow comes, they all make a tight turn.

Quick Facts

Quick facts! Not every fish schools. Some hunters live alone. A panicked splash is a signal to other fish. Feeding bread can crowd fish in unsafe ways. Never corner fish in a net just to see. Look, then let the school go.

Think Like a Scientist

Now, think like a scientist! With a grown-up, watch minnows from a bridge or dock. Did they turn together? What might one fish gain from the crowd? Stay on the bank or dock, and don't lean over.

Outro

Together, the fish are safer! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

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