The Japanese are crazy about fish. Not only do they enjoy eating fish, they also enjoy catching them. At urban fishing centres you can pay 600 yen (about $7) to go fishing in a concrete pool. (The fish have to be put back to be caught again by another customer.)
There is something zen about fishing. In a Huffington Post article Abigail Wise lists the ways in which fishing makes you a better person. It reduces stress and helps keep you fit, not to mention the health benefits of eating fish.
In my years spent in Japan in the 1980s, I saw people fishing in rivers, canals, and lakes. There was something calming about just watching them fish. And, of course, it made for interesting photos.
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Photo tip: The world looks different from above. Try looking for high vantage points to get dynamic high-angle shots. Russian photographer Alexander Rodchenko was a master of using both high-angle and low-angle photography.