How Do Fish Know Where to Go When They Migrate?

Fish use special tools like maps and compasses. Some fish remember the way home, just like you remember your favorite route to school. Others follow clues in the water or even use the stars at night!

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Examples

A salmon swims from the ocean back up a river to lay its eggs, it remembers how to get there even after years away.
Some fish use stars like constellations in the sky as their wayfinding tools when they migrate at night.
A turtle in the ocean follows invisible currents that carry it thousands of miles across the sea.

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Categories: Biology · fish,migration,navigation