Alvania joseaeAlvania joseae is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.DescriptionThe length of the shell attains 2.8 mm. Their shells are pale, "ovate to cylindrical, with a blunt apex." The shell displays 1.5 whorls, often with light brown bands or spots. They are heterotrophs, specifically detritivores.DistributionThis species occurs in the Atlantic Ocean off the Canary Islands.