Tricornis tricornisTricornis tricornis, common name the three-cornered conch, is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.DescriptionThe shell size varies between 65 mm and 170 mm.DistributionThis species occurs in the Red Sea, the Gulf of Aden, the Indian Ocean off Djibouti, Eritrea and Somalia.