What island is in the New York Harbor?
There are several.... Governor's Island, Liberty Island, Staten Island, Ellis island and Manhattan Island.
The Hudson River and the East River meet at New York Harbor. However, the East River is not a true river, but a tidal strait. It connects to the ocean on both sides. It flows south from the bay known as the Long Island Sound, down the east side of Manhattan, and into New York Harbor. The Hudson River flows down the west side of Manhattan, and into New York Harbor.