Oh .. OK I was wondering if it had been something you saw while diving or snorkeling.
In that case .. it probably was an open brain, just pulled in or not fully expanded. The flesh can be right tight up into the skeleton if they're stressed (i.e., recently moved or just put into a tank, etc.)
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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