Melbourne Sea Food restaurants?
Shells on West New Haven by Melbourne Square. Been around for a long time. Locals love it.
Also try the Shack down A1A (Dixie Hwy) in Palm Bay. On the beach. Great service. easy parking. Good crabs and shrimp.
Islands Fish Grill on 5th Ave Indialantic, just before A1A. Can get crowded. Small place.
For more "party" atmosphere try Bonefish Willy's on the beach up on Pineapple Ave.
You can head up the coast to Cocoa Beach for Bernard's on S Atlantic.
All these places are relativley casual. The Dove on New Haven is Italian but they serve good seafood. One of the more expensive places to dine. And for most expensive, but not necessarily the best-though good for the money, there's always the Chart House over on Front street past the park before the causeway.