Hunting Tuna and Unsustainable Sushi - Ken Brower

Elephants and tigers have faced a well-documented downfall in the face of high demand for their parts. But bluefin tuna has been declining more quietly from the oceans than their land mammal counterparts. Ken Brower has followed the largely legal but unsustainable extraction of the fish that can grow as large as 700 pounds as the global demand for sushi has boomed in recent years. His story "Quicksilver Tuna" appeared in the March, 2014 issue of National Geographic magazine.