shadow

You see, this is why I hate vegetarians.




Edit:
I was looking through that japanese food-transformation site, and I found a bit of body expansion, and to save time, as well as effort, I'll post it here.
http://www.akeiarkay.com/myeh/vsf_8.html

You don't see many round mermaids, let alone inflated ones.
Then again, inflated mermaids would be like pool toys and float to the surface, and would have trouble moving about like dolphins-with-human-upper-bodies.