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An octopus has three hearts, nine brains and blue blood.  http://www.nmfs.noaa.gov/stories/2012/08/08_17_2012_octopus_video.html

An octopus has three hearts, nine brains and blue blood. http://www.nmfs.noaa.gov/stories/2012/08/08_17_2012_octopus_video.html

Ammonites /ˈæmənaɪts/ are an extinct group of marine invertebrate animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e. octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species.

Ammonites /ˈæmənaɪts/ are an extinct group of marine invertebrate animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e. octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species.