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Environmental Science

Why Coastal Upwelling Zones Support Thriving Fisheries

Quick fact

Coastal upwelling zones cover less than 1% of the ocean's surface but produce roughly 20% of the world's marine fish catch.

Why this is interesting

You've probably seen maps of the world's richest fishing grounds—off the coasts of Peru, California, and West Africa. What do these regions have in common? A hidden oceanographic engine that turns deep, dark water into a feast for the sea.