So you should have read through Chapter 1 of Song for the Blue Ocean by this point. Perhaps you've put some thought into my blog post questions from a few days ago. Now you can dig a little deeper. Take a look at the SeaChoice web site. Go to the Ratings for seafood: there are three categories: "Best Choice", "Some Concerns" and "Avoid". Which categories do tuna reside within? What's the main difference between those that might be listed in each of the categories.

You might also want to start thinking about going to Carl Safina's blog. Not only will you find more up-dated information about the status of tuna, but other marine organisms as well. You'll also have the opportunity to learn more about him and witness some of his amazing journeys.