New York City is metropolis of eight million organized into five boroughs, four of which are islands or are on islands.   This Saturday, the 3rd Annual City of Water Day Festival will be hosted by the Metropolitan Waterfront  Alliance to help remind the island and shore dwellers of the potential of the New York  waterfront for entertainment, education, adventure and flat out fun.   The festivities will he held across the harbor on Governors Island, at Liberty State Park,  at the Brooklyn Bridge Park, on Staten Island and at the Atlantic Basin.  There will be free kayaking, boat tours, waterfront bike rides, fishing demonstrations, and a kid’s fair as well as lots of music and food.  Sounds like lots of fun.