Rissoina multicostataRissoina multicostata is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.DistributionThis species occurs in the Caribbean Sea and the Gulf of Mexico.DescriptionThe maximum recorded shell length is 5.2 mm.HabitatMinimum recorded depth is 0 m. Maximum recorded depth is 525 m.