Alvania guanchaAlvania guancha is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae. It is named after the Guanche people.DescriptionThe length of the shell varies between 1.5 mm and 2 mm, averaging at 1.95 mm. Its width generally averages around 1 mm. The protoconch of the shell has a glass-like coloration, while the teleoconch is light brown, with white parts.DistributionThis species occurs in the Atlantic Ocean off the Canary Islands, specifically near Tenerife.