Once income has been verified, use the following to determine qualifying quarters: If the year is: Credit 1 quarter for at least this amount. Credit 2 quarters for at least this amount. Credit 3 quarters for at least this amount. Credit 4 quarters for at least this amount.
Making the world better, one answer at a time. Periwinkles reproduce annually with internal fertilization of egg capsules that are then shed directly into the sea. The female periwinkle lay 10,000 to 100,000 eggs. Periwinkles reproduce annually with internal fertilization of egg capsules that are then shed directly into the sea. The female periwinkle lay 10,000 to 100,000 eggs.
Description. The common periwinkle, related to limpets, whelks, and other marine snails, is the most common snail in Rhode Island. A single spiral shell that grows with their bodies protects these small snails. The body includes a fleshy foot, a short tail, and two antennae on the head.ommon Periwinkle (Littorina littorea). Alternate common names: Periwinkle, Winkle. Color: Shell is dark in color, usually brown, black, or gray. Size: 1 inch long and 3/4 inch wide.