Situated just off the intracoastal waterway in St Augustine on the San Sebastion River lies a laid-back seafood restaurant called Grouper Shack.  This eatery sits in a small marina with its own dock allowing for casual boaters to stop in for a quick bite to eat.  It is secluded amidst the marsh grasses and tree line in a peaceful and relaxed setting, yet you can see far and wide if you are there for lunch.  Grouper Shack is an informal dining experience.  You place your order