CostaMar Seafood and Grill, is a Mexican grill and seafood restaurant in Marietta. CostaMar offers authentic Mexican seafood and grill like Fajitas, deep fried-whole fish, shrimp cocktail among other dishes that fulfill the desire of real Mexican seafood and grill of the locals and surrounding neighbors. Their restaurant’s menu tastes better when it is paired with one of their specialty drinks or a beer form the bar.