The Great Pacific Migration of Bluefin Tuna

Shortly after their first birthday, Pacific bluefin tuna (Thunnus orientalis) complete an impressive feat. From the spawning grounds in the Sea of Japan where they were born, the young tuna embark on a journey over 5,000 miles (8,000 km) long, across the entire Pacific Ocean to the California coast where they spend several years feeding and growing. Until recently, scientists believed only a small portion of juvenile tuna made the journey, but several new studies show that may not be the case—in some years the majority of tuna aged between one and three participate in the trans-Pacific migration. click here to read the story 14:53