Cephalopod Sign Video
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Definition
Any of various marine mollusks of the class Cephalopoda, such as the octopus, squid, cuttlefish, or nautilus, having a large head, large eyes, prehensile tentacles, and, in most species, an ink sac containing a dark fluid used for protection or defense.
Source: http://www.thefreedictionary.com/cephalopod
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