Sharks are large, marine fishes that are known for their sharp teeth and aggressive behavior. They are excellent hunters and display ferocious agility when it comes to catching preys. These characteristic tendencies have given them a notorious image in the popular culture, and they have been featured exclusively in many monster movies where they have been depicted as voracious beasts. Their popularity has even led them to be portrayed in animation movies as darkly humorous characters. These fishes have long been the object of fascination for both adults and young kids. As a result, they are often chosen as the favorite subject when it comes to designing birthday cakes. Shark cakes come in various shapes and sizes, and various large and small cakes can be designed with this animal as the prime character. You can have a shark swimming on blue waters and chasing a helpless swimmer. Alternatively a large shark head can be displayed with widely opened jaws. The shark can have a humorous appearance or it may look realistic and fierce.