Monoplex krebsii is a species of predatory sea snail, a marine gastropod mollusk in the family Cymatiidae. Description The maximum recorded shell length is 92 mm. Habitat Minimum recorded depth is 2 m. Maximum recorded depth is 146 m. Distribution This marine species occurs in the Caribbean Sea, the Gulf of Mexico; off the Lesser Antilles; in the Atlantic Ocean off the Azores. References Beu, A. (2010). Catalogue of Tonnoidea Cymatiidae Gastropods described in 1877