Prep time: 20 minutes. Optional chilling time: 20 minutes. Bake time: 20 to 25 minutes. Total time: approximately 40 to 65 minutes, depending on chilling. Oven temperature: 375°F (190°C). Yield: approximately 24 seafood bites. Servings: 8, approximately 3 bites per serving. Use 1 pound lump crab meat, 1/2 pound raw peeled deveined shrimp, 8 ounces softened cream cheese, 1 cup shredded mozzarella, 1/2 cup shredded cheddar, 2 sliced green onions, 2 minced garlic cloves, 1/2 cup plain breadcrumbs, 1 beaten large egg, 1 tablespoon mayonnaise, 1 teaspoon Old Bay seasoning, 1 teaspoon paprika, 1/4 teaspoon salt, 1/4 teaspoon black pepper, and 1 tablespoon melted unsalted butter for brushing. Before mixing, inspect crab meat for shell fragments and gently drain excess liquid. Check whether packaged crab meat is fully cooked and ready to eat. Pat raw shrimp dry and finely chop. Preheat oven to 375°F (190°C) and line a baking sheet with parchment paper. Combine softened cream cheese, mozzarella, cheddar, green onions, and garlic in a large bowl. Fold in crab, shrimp, breadcrumbs, egg, mayonnaise, Old Bay, paprika, salt, and pepper. Mix gently until combined. If the mixture feels too soft to shape, cover and chill for approximately 20 minutes. Scoop about 2 tablespoons per portion and form approximately 24 compact seafood balls. Arrange with space between them on the baking sheet. Brush tops lightly with melted butter. Bake approximately 20 to 25 minutes, or until lightly golden and the centers reach at least 165°F (74°C). This is a conservative food-safety target for the mixed filling containing raw shrimp, egg, and possibly ready-to-eat crab. Use an instant-read food thermometer rather than relying on color alone. Allow bites to rest for 3 to 5 minutes before serving. Optional accompaniments include garlic butter, spicy mayonnaise, lemon aioli, lemon wedges, and fresh parsley; these serving suggestions are not included in the measured ingredient list or nutrition estimates. Optional variations include a pinch of cayenne, lemon zest, chopped chives, or Monterey Jack instead of mozzarella. Refrigerate raw seafood mixture promptly at 40°F (4°C) or colder and use within 1 day for best safety and quality. Store cooked leftovers promptly in airtight containers in the refrigerator at 40°F (4°C) or colder for 3 to 4 days. Freeze fully cooked bites for up to 2 months for best quality. Reheat thoroughly to 165°F (74°C). Nutrition values are estimates per serving based on 8 servings and may vary by seafood type, cheese brands, breadcrumbs, and portion size.