1 1/2 cups uncooked regular long-grain white rice
3 cups water
1 lb uncooked deveined peeled large shrimp, thawed if frozen, tail shells removed
1 lb sea scallops, thawed if frozen
1 can (14.5 oz) diced tomatoes with garlic and onions, undrained
1 medium bell pepper (any color), chopped (1 cup)
1 medium onion, chopped (1/2 cup)
3 to 4 teaspoons Cajun seasoning