Fishing the high seas or pillaging the oceans

I've been out of commission for a bit, for various reasons that I'm trying to shake off, though it's not working terribly well.
However, one thing that I have been doing is finally finishing various books sitting in my bookshelf that I have taken much time (years, in some cases) to actually complete.
One book that I'm working through is Taras Grescoe's BottomFeeder. This is all the more embarrassing in that I've actually met him, he's signed my copy of the book, and we've discussed fisheries. At any rate, I suppose some would say better late than never.
It's helped clarify some of my hesitation around the ethics of seafood, and reconfirmed my cessation of the eating of shrimp, salmon, cod, etc. Taras has, in fact, written a great book - what some call the Fast Food Nation (Eric Schlosser) of the sea. Incisively talking about the horrible effects of shrimp farms on the watersheds, mangrove forests and rice fields of India and Southeast Asia, let alone the lack of scruples in the processors in treating shrimp with Borax and other foul chemicals to keep them looking nice and pink and preventing them from rotting. The discussion around the Norwegians' treatment of the BC coastline for their salmon farms, and how they have destroyed their own coastlines, bringing them to come to BC to destroy ours. How Canada almost led the way to the razing of the oceans by our spectacular collapse of its cod industry 20 years ago. How the Chinese and the Japanese, if they don't start seriously thinking about their pillaging of the oceans, will eventually cause the destruction of their very cultures. It's quite chilling.
Ironically, I went to dinner with a friend recently, and they really wanted to eat sushi. The idea of this, though I previously loved eating sushi, and then, after that, became hesitant to go, now makes my stomach turn. I'm afraid I'm down to the vegetarian udon soups and vegetable maki at sushi restaurants in order to be responsible to my Creator and His creation...