The horse conch (Triplofusus giganteus) is considered the largest sea snail in Florida and the United States, growing up to two feet in length. Although they are the official state seashell of Florida, they can be found all along the Atlantic coast, from Florida to North Carolina and in the shallow waters of the Yucatan Peninsula. If their size is any indication of their diet, the horse conch is carnivorous, preying on smaller sea snails and bivalves, smothering prey with their muscular foot. Their shells are bright orange that, interestingly enough, turns white/pale orange with age.