peel and devein shrimp. rinse shrimp,cod, and mussels, pat dry paper towels set aside.
in a large saucepan cook onion, garlic, in hot oil over medium heat about 5 minutes or until onion is soft. meanwhile press tomatoes and the juice yhrough a fine mesh sieve. discard pulp and seed. add tomato mixture, clam juice, salt and pepper to the sauce pan, bring to boiling; reduce heat simmer 10 minutes.
stir in snipped thyme and orange zest. add mussels, shrimp, and cod to sauce pan. gently stir to combine. return to boiling; reduce heat. simmer, covered 3 minutes or until mussel shells are open, shrimp are done.. discard mussels thar dont open. serve