Too often viewed only as sushi, the bluefin tuna is an extraordinary specimen of ocean wildlife, growing up to 10 feet long and sometimes weighing more than 1,000 pounds. Unlike almost all fish, ...

DESCRIPTION: Sleek giants with blue and gray coloring, bluefin tuna are one of the largest fish in the ocean and can grow to weigh more than 1,000 pounds. Their bodies are muscular, and they have ...

Narrator: In 2013, a 489-pound tuna sold for a whopping $1.8 million. But you can buy a can of tuna fish at the grocery store for under $2. So, what's the difference? For starters, it's not the ...