Preheat the oven to 375°F (190°C).
Cook the lasagna noodles according to package instructions until al dente. Drain and set aside.
In a skillet, heat olive oil over medium heat. Add minced garlic and sauté for about 1 minute until fragrant.
Add the shrimp and scallops to the skillet and cook for about 3-4 minutes until they are just cooked through. Remove from heat.
In a mixing bowl, combine ricotta cheese, half of the mozzarella cheese, half of the Parmesan cheese, oregano, basil, salt, and pepper. Mix well.
Spread a thin layer of crushed tomatoes on the bottom of the baking dish.
Layer 4 lasagna noodles on top, then spread half of the ricotta mixture, half of the seafood mixture, and a layer of crushed tomatoes. Repeat the layering once more.
Place the last 4 lasagna noodles on top, covering with the remaining crushed tomatoes, and sprinkling the remaining mozzarella and Parmesan cheese on top.
Cover the baking dish with aluminum foil and bake in the preheated oven for 25 minutes.
Remove the foil and bake for an additional 15 minutes or until the cheese is bubbly and golden brown.
Let the lasagna cool for about 10 minutes before slicing. Garnish with fresh parsley if desired.