Imagine being in a dark room with no lights on. You can still feel where the walls are, even if you can't see them. Fish do something similar, they use special senses to figure out where they are and which way to swim.
Like a compass in their head, fish have a sense called lateral line. It helps them feel vibrations in the water around them, like ripples or other fish moving nearby. They also have eyes that let them see light and shadows. Together, these senses help fish know where they are, kind of like having a map inside their body.
Examples
- A fish can feel a ripple from another fish swimming nearby, it helps them know where to go.
- Fish see light bouncing off rocks and plants, which tells them where they are in the water.
- When a shadow moves over a fish, it might swim away, thinking something is coming.
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See also
- How Do Fish Know Which Way to Swim?
- How Do Fish Know Where to Go When They Migrate?
- How Do Fish Know When to Migrate?
- How Do Bats Navigate in the Dark?
- How Do Bees Find Their Way Back to the Hive?
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