Shrimps and Crabs
Porcelain (or Porcellanid) Crabs
I went onto the internet to find out how this name got coined, and one story is because their shells are very thin, like porcelain.
Dotted Porcelain Crab
"I want to be like daddy when I grow up..."
Spotted Porcellanid Crab
Very similar to the dotted one... in fact I may have gotten them mixed up. Bear with me if I did.
A juvenile Porcellanid