Preheat the oven to 375°F (190°C).
In a medium skillet, sauté the garlic until fragrant.
Add the chopped spinach and cook until wilted.
In a large mixing bowl, combine the cooked spinach mixture, cream cheese, sour cream, mozzarella, and Parmesan.
Fold in the shrimp and crab meat gently to avoid breaking them.
Season with Worcestershire sauce, salt, and pepper.
Transfer the mixture into a baking dish and smooth out the top.
Bake for about 25-30 minutes until heated through and bubbling on the edges.
Let it sit for a few minutes before serving.