How big are tuna? That all depends on the species. But no matter what kind you have on the end of your line, your shoulders and arms are going to get a workout reeling it in. If you happen to be ...

Different types of tuna vary in the amount that’s safe to eat weekly. Learn about canned tuna and mercury here.

It's tough to get away from mercury in a fish-heavy diet. As the decades have passed, mercury from power plants and factories has had plenty of time to spread through the oceans and seep into the ...