McDonald's Happy Meal web site confirms that the October 2015 kids' meal theme will be based on the current film Hotel Transylvania 2 (not The Nightmare Before Christmas, which was released back in in 1993).
There are differences in the shell textures of oysters and clams. The shell of a clam is smooth and shiny while an oyster has a rough outer shell. Both the organisms take in water through the shells but the filtering procedure is different. Oysters produce pearls which are in much demand but clams do not.
Pacific oyster (Crassostrea gigas). Pacific oysters grow to 12 inches and are found on firm or rocky beaches intertidally to 20 feet. Their shells are fluted, irregular, chalky-white or gray, new growth often colored purple, and can be distorted to conform to the shape of the object to which the oyster is attached.acific oysters grow to 12 inches and are found on firm or rocky beaches intertidally to 20 feet. Their shells are fluted, irregular, chalky-white or gray, new growth often colored purple, and can be distorted to conform to the shape of the object to which the oyster is attached.