The Story Of Sushi, a short film created for Bamboo Sushi restaurant in Portland, Oregon, has a pretty depressing take on the state of the world's sushi. The four minute film dives into issues of sustainability and overfishing, and is worth watching if you need a primer on how fishing works (or if you want to get really sad).
Beyond the learning component, though, the real reason to watch this clip is because of the amazing hand-crafted miniatures. In fact, the film took seven months to complete. That's pretty painstaking work -- and definitely worth four minutes of your time.