Off the coast of Hokkaido exists an entire ecological community that feeds off "whale fall"---that is, the decomposing carcasses of dead whales. However, this whalefall could additionally support a whole host of bottom feeders like the Japan's Institute of Cetacean Research as previously chronicled by Captain Japan.

"WHALEFALL!"
The Esoteric Science Resource Center, by Paul T. Riddell - Wed, Feb. 9th, 2005, 01:29 pm... a new article in Nature on whale falls: specifically, on the life forms that survive and thrive on whale carcasses that fall to the ocean bottom. The study of whale falls is still relatively new, but marine biologists not only find organisms normally only seen at deep-sea hydrothermal vents, but new organisms previously never seen before. In particular, considering when truly large whales first evolved, these communities might be composed of life forms dating back some 35 million years....more...
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To read more about whale fall refer to the February 9th issue of Nature or check out the PDF of the original research paper by Amano, K. and Little,"Miocene whale fall community from Hokkaido, northern Japan."