Have never tried one - they're quite interesting looking! Your series for this month is very educational. They're prettiest with their skin/shell, and the peeled one looks a bit, well, nude. Poor thing! :-)
You have a very nice series going here, with a definite style. If I was so lucky & these were mine I think I'd be looking for a richer black. I often get good results using a Curves layer adjustment. You might have to remove the white specks by hand. Then have them printed on canvas & hang them together in the kitchen or dining room (or sell them to a restaurant). "D