Hi BadJonno,
To Japanese people, the whaling debate is not as much as critical as it is in Western media, or more precisely in English language media. If you ask many Japanese about what they think on this matter, you'll find out that most of them don't even know that Japan is still hunting whales.
In fact the whaling debate concerns more the Japanese whaling communities such as Taiji (Wakayama-ken), Wada (Chiba-ken) or Kushiro (
Hokkaido) and bureaucrats from the Japanese Agency for Fisheries.
Of course, you may find articles about the results of Japanese scientific whaling and the decisions taken during the IWC plenary sessions every year in the Japanese newspapers. You'll also find articles about some festival (matsuri) or buddhist ceremony (kuyou) dedicated to whales in some part of Japan.
The question is, is there a need for Japan to have a public debate on whaling when most of the news on this subject you may find in Western media is just claptrap from preservationist NGOs who just seek more funds. The fact that you mentionned "Japan bribing some poor countries to make them join the IWC" is interesting as this claim is not founded.
The fact is that whaling is far more a political subject than a ecological one. Politicians in Western countries, esp. in Australia and New Zealand, use it as a way to gain public support before election by showing their concern for "environmental issues".
If you still want an example of an article about whaling from a Japanese newspaper, here's one :
http://www.sanin-chuo.co.jp/newspack/modules/news/article.php?storyid=304384013
It is quite critical...but not in the way you may expect.
By the way, you might feel Japan's image is tarnished by the whaling issue, but it hasn't prevented Japan from staying one of the main economic partner of all the countries who criticise it on this matter (USA, Australia, NZ, UK, etc.).
Besides, it's funny that IFAW recently asked the American government not to back Japan's access to a permanent seat in the Security Council of the UN...although it is USA who mostly need it for strategical reasons.