While it doesn't seem like the delicious seafood can see, it actually has over 100 simple eyes. They go around the edge of their mantles and they look like a string of beads. Simple eyes, however, are much less complex than the ones you and I have. Scallops cannot even detect shapes. All their eyes allow them to do is detect changing patterns of light and motion.
This means that a scallop would be able to determine a fish just swam past it, but it wouldn't even know what shape it was, or if it even was a fish. Scallops' eyes, however are more complex than other bivalves. They have 2 different types of retinas that correspond to light and darkness. This allows them to detect the shadows of their predators.