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Pacific Bluefin Tuna Migration

A map of the Pacific Ocean and the migration routes of the tuna
NOAA

Young Pacific Bluefin Tuna migrate from the spawning grounds off the coast of Japan to the shores of California. The fish make theĀ 5,000 miles (8,000 km) journey at around the age of one and after a few years of feeding and growing they make the exact same trek but in reverse.