Gould James L
Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA.
Curr Biol. 2015 Feb 2;25(3):R104-R106. doi: 10.1016/j.cub.2014.12.024.
Sea turtles memorize the magnetic coordinates of their natal beach, returning to that combination of parameters to lay eggs decades later. The intervening secular (year-to-year) variation in field intensity and inclination can lead the nesting females to a series of predictably different beaches.