Need Directions? Ask a Turtle

Baby turtles use the earth's magnetic field to navigate through the oceans.

For Turtles, Earth's Magnetism is a Built-In GPS - NPR

Clearly Ambiguous / Wikimedia Commons

You can read about how turtles and other animals (including humans) navigate by reading Colin Ellard's excellent book You Are Here: Why We Can Find Our Way to the Moon But Get Lost at the Mall.

Choko / Wikimedia Commons