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The world's largest synchronous migration takes place every day, called the Diel Vertical Migration. Aquatic species of lakes and oceans travel vertically from the depths to the photic zone as the sunlight dissipates throughout the night.

The world's largest synchronous migration takes place every day, called the Diel Vertical Migration. Aquatic species of lakes and oceans travel vertically from the depths to the photic zone as the sunlight dissipates throughout the night.