For die-hard tuna sandwich lovers, the beloved fish sandwich might rank No. 1 as ... tuna sandwiches alone is a perfectly good way to use up their weekly calorie allotment. And while it is ...

Bluefin tuna are an ocean-going fish that grow up to 10 feet long and can weigh as much as 1,200 pounds. Unlike almost all fish, bluefin tuna are warm-blooded and able to regulate their body ...