The Giant Horse Conch is the Death Star of the Mollusk World

The Giant Horse Conch (Triplofusus giganteus) can grow up to 24 inches across. It's most commonly found off the Atlantic coast of Florida at depths of 43 to 223 feet. If you go scuba diving there, the Giant Horse Conch is waiting for you. And it's hungry.

(Video Link)

This video shows the monster hunting non-human prey: a Tulip Snail. I highly recommend watching the entire video, including the battle between scavenging hermit crabs at the end.