scallops are unusally white, fresh scallops are somewhat pinkish, bad scallops have a off rank foul smell not fishy very rank foul smell and are slimy in appearance.
Sometimes stores repackage seafood giving a fresher date when they are off on date too be careful keep your store receipt
If when you eat them, you die.
You can tell that a ham has gone bad by looking at it and smelling it. If it smells strange or looks like it has mold, it is bad.
If its rotten
it is bad if it is bad. if not, it is most likely good.
If u have diarrhea after eating it.
Actually, you honestly can not
your car will not start
How can you tell if a crank sensor has gone bad on a 1994 Nissan altima
It will have a greenish tint to it. And it will be a little slimy and have a bad smell
Swap it with one you know is good.
Try smelling it if you still dont know, pour some into a glass and see if it looks clumpy or thick. Dont drink after its gone bad!
It will stink! Sour smelling.
They are mollusks (like clams). They do not have eyes, that I can tell. For some reason I cannot add related links. Wikipedia has a nice article on scallops.