What are these straight canals in these islands in New York? These maps look like something quite out of a game

Name: Striped Canals

Lat, Long: 40.6089895,-73.6216547

Location: Hempstead, New York, USA

https://www.weirdgoogleearth.com/wp-content/uploads/2020/06/striped-islands.jpg?v=1617228171https://www.weirdgoogleearth.com/wp-content/uploads/2020/06/striped-islands-150x150.jpg?v=1617228171WeirderIslandsNatural formationsNatureCanals,Islands,Natural formations,New YorkWhat are these straight canals in these islands in New York? These maps look like something quite out of a game Name: Striped Canals Lat, Long: 40.6089895,-73.6216547 Location: Hempstead, New York, USAPeculiar places from around Google Earth