Hapalochlaena lunulata
(Quoy & Gaimard, 1832)
Blue ringed Octopus
Not Reef Tank Suitable
Not Suitable for Fish-Only Tank
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These are members of the class Cephalopoda and another member includes the nautilus. The word Cephalopoda means literally, "head-foot bearing" and refers to the way the cephalopod arm appears to be attached directly to the head. Few are collected for the trade.