Migration Routes of Sea Turtles

Data from over 200 tracked turtles confirm they maintain course within 1 degree of accuracy over thousands of kilometers. This calibrated magnetic map capability, which uses both intensity and inclination cues, exceeds the average navigational ability of migratory birds and rivals military-grade GPS systems. Notably, leatherbacks complete the longest migration of any reptile, traveling across the entire Pacific Ocean, while loggerheads return to within 50 meters of their birth beach after decades at sea. The discovery reveals a complex internal compass no less sophisticated than satellite technology, reshaping our understanding of long-distance oceanic connectivity.