Sea Glass or Beach Glass?

Sea glass or beach glass?  Which is it?  Let's just say that if the glass was found in salt water, it's sea glass.  But when you hear someone say about their fresh water pieces how excited they are to have found "sea" glass, take heart, have pity, join the club, and please don't correct them.  It's like calling a tissue a "Kleenex".  No one seems to care about that, so let's just agree to treat "sea glass" the same way, okay? 

Here is one of my favorite photos of some down-home "sea"glass.  Enjoy!