Attack of the Giant Shrimp Monsters

Most of the oil damage in the Gulf is happening out of sight, under water, say the experts. We don't know what will happen. How about this? Oil feeds a mutant kind of shrimp that grows as large as a city building, populates endlessly, and leaves the ocean to attack humans on land. There's a 50s SciFi flick for you! A young scientist finally discovers what stops them: a certain brand of shrimp sauce. (There's placement money for your production!)

Young screenwriters, be my guest. I relinquish all rights to the story.