One of my favorite places when I lived in Tokyo was my neighborhood sushi bar. I'd take a seat, and the chef would prepare fish fresh from the Tsukiji market in central Tokyo. A specialty was the raw octopus, delivered on a bed of lightly vinegared rice. I liked sushi before I moved to Japan; now I love it. I'm hardly alone, which is bad news for the world's oceans. Partly because of the rising global demand for sushi, we're fast fishing out our seas, with some researchers estimating that if we don't change the way we harvest the oceans, all the commercial fisheries in the world could collapse as early as 2048. That could mean no more California rolls in your local supermarket.
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