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This one's tricky. Lay folks refer to lobster abdomens as "tails", but technically the tail is comprised of the uropods and telson only (flappy things at end and terminal medial segment). So from most folks' perspective it IS the "upper tail", and from the invert zoologists it's the abdomen. We're both right, but your "right" is more popular.FredT:Actually looks like the top of the tail section.
Oops, I'm being vague myself. "Carapace" technically refers to the exoskeleton covering the head and thoracic segments only. The abdomen is not covered (unless tucked underneath the "carapace". But so many folks interchange "carapace" and "exoskeleton" (me included), the accuracy of the term degrades.JC Fedorczyk:Okay so does that mean that I took a picture of an empty carapace or is it actually a juvenile lobster that just molted?