Why do sea turtles return to their birthplace to lay eggs?

Sea turtles return to their birthplace to lay eggs due to an instinctive behaviour called natal homing. They use Earth’s magnetic field as a navigational guide, remembering the unique “magnetic signature” of their natal beach. Returning to the same location ensures optimal nesting conditions, as these sites historically supported successful reproduction. This remarkable ability allows sea turtles to travel thousands of kilometres across oceans with precision.