Partially, There is always a water boundary line between states
the long island sound is 90 miles/(145km)..
Long Island, New york is to the south and Connecticut to the north.
It is used for commercial shipping, commercial fishing, recreational fishing, boating, beach going, and watersports. Also, it is used to study the many water birds, fish and animals that inhabit LIS...
Long Island Sound is an estuary of the Atlantic Ocean.