If you think that Japan is the country which catches whales the most in the world, it's a wrong image, so please revise it. I know the country where fishers catch whales far more than Japan. It's South Korea!
As you know, Japanese government allows whaling for research. They targeted 900 whales, but only caught 267 in 2012 due to bad weather and interruption from activists. Plus, Japanese fishers accidentally catch approximately 100+ whales in their fixed net per year. It's an unfortunate accident, of course. Even if research whaling is done successfully, they catch only approximately 1000 whales per year in total.
By contrast, in South Korea, they caught 2350 whales in 2012! (News source, KBS World News, Japanese) They say whales are ACCIDENTALY caught in their fixed net, but can you believe?! I totally cannot. In South Korea, fishers caught 656 whales in 2009, 656 whales in 2010, 1098 whales in 2011 (News source, Joongang Ilbo, Japanese) and 2350 whales in 2012. It's rapidly increasing! Even if it's by unfortunate accident, at least South Korean government should make some efforts to mitigate such accidents. But nothing's done, it's increasing!
If you are an activist opposing to whaling, please target South Korea rather than Japan. South Korean fishers catch whales far more than Japanese fishers!