507 Main At Shark River 507 Main St, Belmar, NJ07719 507 Main at Shark River is located right near the bridge from Belmar to Avon, on Main Street. The restaurant offers an…More extensive menu, everything from burgers and chicken sandwiches to seafood entrees and brick oven pizza. There are kid-friendly options on the menu. A covered outdoor patio area in the back is open in nice weather. Bands and DJs perform every weekend, and there are dance areas in both the front and back bars. There's a back room available for rent for private parties.