Mexican Shrimp Soup

Name: Mexican Shrimp Soup
Ingredients: 1 pound medium Mexican shrimp, cooked, peeled, deveined, head and tail removed and reserved; 2 cups water; 2 tablespoons olive oil; 1 cup chopped potato; 1 medium onion, chopped; 1 medium green bell pepper, seeded and chopped; 1/2 cup chorizo, thinly sliced; 4 cloves garlic, minced; 1 teaspoon ground cumin; 1/2 teaspoon paprika; 3 bay leaves; Kosher salt and freshly ground black pepper; 1 cup vegetable stock; 2 tablespoons sriracha sauce; 1 pound clams, cleaned, de-gritted; 1 pound sea scallops, cleaned; 1 cup chopped fresh cilantro leaves; 6 lime wedges, for serving