Scallops are bivalve mollusks categories into two groups. Bay scallops, found only in East Coast waters, measure about 1/2 inch. One pound of these tiny, tender and sweet scallops contains about 100 scallops. Sea scallops are larger, less tender and less expensive than bay scallops. Measuring about 1 1/2 inches, sea scallops number about 30 per pound and are the best kind to use for kabobs.
To devein shrimp, use a sharp pointed knife to slit along the outside curve of the shrimp. Pull out the dark vein, then rinse the shrimp under cold running water.