Dr. Roger Hanlon who studies cephalopod camouflage at the Marine Biological Laboratory in Woods Hole, MA describes the mesmerizing ""passing cloud"" pattern displayed by the male Giant Australian cuttlefish.
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[taxonomy:binomial=Sepia apama]
This species differs from the giant cuttle and mourning cuttle in it's reddish blotched colouration (although this one changed colour several times whilst being photographed), relatively round body and eyes with a smooth socket and yellow edge. The mourning cuttle has a long mantle that extends between the eyes, and the giant cuttle has skin flaps on it's body and behind the eyes.
