Crown Conch Seashells
Melongena melongena
Crown conch seashells are usually dark brown and white. Sometimes they are a light brown and white. They're heavy weights in the family of Melongenidae. These mollusks are carnivores, feeding on clams and snails. Melongena crown conchs are found in shallow water in the West Indies.
This shell is a great candidate for that "ocean sound" when you put it up to your ear. Cool!