Preheat your oven to 350°F (175°C).
Cook the jumbo pasta shells according to the package instructions until al dente, then drain and set aside.
In a skillet, melt the butter over medium heat.
Add the chopped shrimp and cook until they turn pink and are fully cooked through.
In a mixing bowl, combine the cooked shrimp, lump crab meat (or additional shrimp), and any desired seasonings.
Stuff each cooked pasta shell with the seafood mixture.
Place the stuffed shells in a baking dish and cover with your favorite garlic sauce.
Bake in the preheated oven for about 20-25 minutes, or until heated through and bubbly.
