PandaMomentum t1_isqzrud wrote
Reply to comment by Flamin_Yon in TIL eels swim from a lake in Australia through stormwater drains and across the ocean to lay eggs in New Caledonia where they die. Their eggs hatch and make the return journey back to the lake they came from. by Aussiewhiskeydiver
Monarch butterflies do this too -- the migration from Mexico to the US and back takes multiple generations. It's the great grandkids that show up in the same forest in Mexico each year. Genetically encoded somehow.
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