Clams

So yeah I was wondering why clams are happy and what makes them happy (as in "as happy as a clam). So on Google (Topeka) search i found this: That some people think they look like they're smiling and the phrase "as happy as a clam at high tide". High tide is when they are safe. Shellder (the most awesome pokemon) looks like a clam. A clam with a tounge. and eyes. and its PURPLE!!!!