"The bluefin tuna (Thunnus thynnus) is a creature of superlatives. Growing to 1500 pounds (700 kilos), traveling on transoceanic migrations, and reputedly capable of swimming 50 miles (90 km) per hour, it is one of the largest, most wide-ranging, and fastest of animals. To anyone who has seen this saber-finned giant explode through the surface of the sea, it is among the most magnificent."