Navigation that uses the Earth's magnetic field or geographic features to determine direction and location, especially by animals.
From geo- (Earth) + navigation (from Latin navigare, 'to sail'). This term became prominent in the late 20th century as scientists studied how migratory animals and sea creatures navigate without GPS.
Sea turtles born on Florida beaches will swim thousands of miles across the Atlantic and somehow find their way back to the exact same beach decades later to lay eggs—using geonavigation based on Earth's magnetic field and ocean currents! It's like they have a built-in biological GPS.
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