A SHELL IS NOT ONLY A  THING YOU GO INTO 
 BUT  ALSO  A  THING  YOU  COME  OUT  OF, 
 EXPANDED  IN  MY  BODY   AS  A   TURTLE, 
 BUT ALSO AS A  HEDGE WHERE  YOU MAY LURE 
 YOURSELF  INTO ONE  SIDE,  AND  YOU  MAY 
    BUILD INSIDE, SOMETHING, AND THEN     
        EMERGE INTO SOMETHING ELSE