Anyone know of a good seafood restaurant between Jones Beach and Manhattan, some preferrably off the Southern State and on the water? Also, somewhat reasonably priced and casual would be desirable. Thanks for any help!

Here is a search from Newsday regarding seafood restaurants in Nassau County. Check them out and see which one fits your requirements. Each has a map for your reference.

http://www.newsday.com/entertainment/dining/search-venues.front?attribute-ny-cuisine=ny-cuisine-Seafood&regComm=R%3ASouth%2BShore%2BNassau&attribute-ny-price-range=&attributeType=ny-cuisine&keywords=