Heat the olive oil in a large cataplana or heavy-bottomed pot over medium heat.
Add the sliced chorizo and sauté for 3-4 minutes until the edges are golden and the flavorful oils are released.
Stir in the sliced onion and red bell pepper, cooking until the vegetables are tender and translucent.
Add the minced garlic, smoked paprika, and bay leaf, heating for one minute until the kitchen is filled with aroma.
Pour in the crushed tomatoes, white wine, and fish stock, bringing the liquid to a steady simmer.
Arrange the white fish pieces, shrimp, and cleaned clams on top of the sauce in an even layer.
Secure the lid tightly and steam for 8 to 10 minutes until the fish is flaky and the clams have fully opened.
Discard any unopened clams, season with sea salt and black pepper, and sprinkle with fresh cilantro before serving in shallow bowls.