Cut the bread into slices and put them in the oven at 200ºC until toasted. Set aside.
Cut the octopus into slices and the cuttlefish into strips, removing the hard areas.
In a pot with the olive oil, cook the cuttlefish, garlic and crushed tomato. Cover and cook for 5 minutes.
Add the shrimp, fish stock and bring to a boil over medium heat.
Add the octopus and mussels. Cover and cook for 5 minutes over medium heat. Add the pepper, parsley and that's it!