Turtles Use Earth’s Magnetic Fields as a Navigational System

Loggerhead_turtle tracking

A Loggerhead turtle with tracking device.

Scientists Nathan Putman and Ken Lohmann have determined that turtles can navigate across entire oceans by using the earth’s magnetic fields to determine their longitude and latitude. To test this hypothesis, they used a special water tank that permitted them to alter the magnetic fields inside. They then placed the turtles in the tank to see how they would respond to simulations of different locations…

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