Friday, January 2, 2009

How Crabs Find Their Way Home

How Crabs Find Their Way Home: Scientific American: "How animals keep their bearings on hunting trips is somewhat of a mystery. Celestial navigation and electromagnetic fields help ants, honeybees, birds and sea turtles keep track of directions. More puzzling: how animals measure distances. A new study has found the first direct evidence that fiddler crabs monitor their travels by tracking their strides."