WHEN we think of shellfish, we tend to think of shrimp and lobster, and in terms of dietary and economic indulgence. In the context of a healthful diet, however, shellfish are generally low in calories and saturated fat. And like regular fish, they contain the beneficial omega-3 fatty acids. Shellfish are also an excellent source of protein, iron and such trace minerals as copper and zinc.
The following list of shellfish compares nutrient values for three ounces cooked. As a general rule, four ounces of raw shellfish will yield three ounces cooked.