Seppie con i piselli is a traditional dish with unknown origins – some say it comes from Liguria, some from Marche, Romagna, or Lazio. The dish is made with cuttlefish, onions, tomatoes (which are omitted in some versions), peas, white wine, and olive oil.

The onions are sautéed in olive oil, and the cuttlefish pieces are then added along with white wine. When the wine evaporates, the tomatoes are added and the dish is slowly simmered until the cuttlefish is tender. The peas are added near the end of cooking, and seppie con i piselli are usually served with crusty bread on the side for mopping up the flavorful juices.

Calamari ripieni is a flavorful Italian seafood dish consisting of stuffed calamari. The calamari are stuffed with a variety of ingredients including garlic, breadcrumbs, capers, pine nuts, parsley, and onions. It is recommended to use only the freshest calamari, which is also the trickiest part of the dish, as cleaning and preparing it is a lengthy process.

Stuffed calamari are often paired with tomato sauce, sometimes with the addition of anchovies, and the whole concoction is then baked in an oven until tender.

Cozze gratinate is a traditional mussel-based dish originating from Italy. Although there are many recipes, the dish is usually made with a combination of mussels, garlic, breadcrumbs, parsley, olive oil, oregano, salt, and pepper. The mussels are scrubbed, cleaned, and placed in a large pan over high heat until they open.

The half-shells with the mussels are then placed into a roasting pan, sprinkled with parsley, oregano, and garlic. The mussels are drizzled with olive oil and sprinkled with breadcrumbs before they're baked for a few minutes, seasoned with black pepper, and served. 

Stuffed cuttlefish, often replaced with the smaller and more available squid, is a traditional dish whose origins are claimed by many Italian regions, including Liguria, Campania, Apulia, and Sicily. Following this, many regional recipes have been created that use a different combination of ingredients to create various flavorful fillings.

However, all of them employ Italian and Mediterranean classics such as various herbs, garlic, prosciutto, capers, pine nuts, and ricotta, parmesan, or pecorino cheese. When filled, the cuttlefish is usually pan-fried, grilled, or baked and finished off with the addition of white wine. 

Capelonghe veneziane is a traditional Venetian way of preparing razor clams. The dish is made with a combination of razor clams (capelonghe or cannolicchi), olive oil, parsley, salt, and black pepper. The razor clams are washed, soaked in cold salted water in order to remove the sand, and then cooked in olive oil until they open.

When they open, the razor clams are removed from the pan, while the cooking juices are strained to remove leftover sand. The strained liquid is mixed with olive oil, pepper, and parsley, and the dressing is then poured over the razor clams before serving.