Image: Hatchling loggerhead sea turtles born on Florida beaches migrating around the Atlantic
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Figure 2: As this map shows, hatchling loggerhead sea turtles born on Florida beaches migrate around the Atlantic Ocean in a clockwise fashion before returning to their natal beaches years later. Researchers testing in an experimental setting how loggerhead hatchlings responded to magnetic fields characteristic of three widely separated spots along this route (see black dots in map) found that the turtles in general oriented as a group in the direction appropriate to keep them on the proper "path."
This image is part of the PBS Nova documentary Magnetic Storm . Click here to watch.