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://i1.wp.com/www.weirdgoogleearth.com/wp-content/uploads/2020/06/striped-islands.jpg?fit=1000%2C676&ssl=1https://i1.wp.com/www.weirdgoogleearth.com/wp-content/uploads/2020/06/striped-islands.jpg?resize=150%2C150&ssl=1WeirderIslandsNatural 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