1. In a bowl, combine lime juice, Worcestershire sauce, soy sauce, tomato clam juice, extra hot sauce, salt, and pepper. Divide into two equal portions and set aside.
2. Place shrimp in a bowl and place scallops in another bowl. Pour previous mixture into both bowls and set aside.
3. On a plate, place a ring mold. Add a layer of cucumber slices and top with a layer of thinly sliced red onion. Add a layer of shrimp and top with a layer of scallops. Add a layer of medium-sized shrimp and top with a layer of cooked octopus. Repeat until the ring mold is full.
4. Garnish with avocado slices and thinly sliced red onion. Gently unmold seafood tower, pour with sauce mixture and serve with Northgate® Tostadas on the side.