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Learn about Penis fish

 This is not a joke. There is an animal named so -- penis fish. It is Urechis unicinctus (in Chinese -- 海肠). Well, you may see some penis fish:
^{"Gaebul" by ProjectManhattan - Own work. Licensed under CC0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Gaebul.jpg#mediaviewer/File:Gaebul.jpg}

 More about the penis fish: http://en.wikipedia.org/wiki/Urechis_unicinctus

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They look soft.