Arrange the cooked linguine in a serving plate.
Make the white sauce by melting the butter in a sauce pan.
Add the flour, stir and then cook for 1 minute in low heat.
Pour-in the milk and continuously stir until the texture becomes soft. Set Aside.
Heat olive oil in a pan.
Sauté onion and garlic
Add the shrimp and bay scallops. Cook for 2 minutes.
Put-in the mussels and clams. Cook for 3 minutes.
Pour-in the white wine and let boil.
Pour-in the white sauce. Stir and then add the parmesan cheese. Continue cooking for 1 minute.
Top the sauce and seafood over the linguine. Garnish with chopped parsley.
Serve. Share and enjoy!