Meanwhile, remove the meat from the lobster tail and cut it into 1/2-inch pieces. (To pry the meat out of the lobster tail, cut away the soft undercover with scissors and ease away the meat from the shell with your fingers.)
Add the lobster and the shrimp to the sauce and simmer, uncovered, until the shrimp and lobster are just opaque, about 5 minutes.
Meanwhile, cook the linguine according to package directions; drain and place in a large serving bowl. Toss at once with the sauce and sprinkle with the parsley.
Yield: 6 servings.
Average nutritional information per serving: 375 calories, 4 grams total fat (1 gram saturated fat), 98 milligrams cholesterol, 641 milligrams sodium, 58 grams carbohydrates, 5 grams dietary fiber, 25 grams protein.