Answer: murexes

AnswerCrossword Clue
MUREXESTrumpet shells
murexesany marine gastropod of the genus Murex, common in tropical seas, certain species of which yield the royal purple dye valued by the ancients
murexespurplish red
murexesshell used as a trumpet, as in representations of Tritons in art
murexesMUREX, a marine mollusc