The New York-New Jersey Harbor Estuary is a big body of water where two rivers, the Hudson and the Passaic, meet the ocean. It's located in the Northeast part of the United States in the states of New York and New Jersey.
Imagine a big tub of water with tiny boats floating in it. That's pretty much what the harbor looks like, except it's a lot bigger and you can't see the boats from far away. The harbor is one of the busiest in the world because it's a really important place for boats to bring things like food, clothes, and toys to the nearby cities.
The geography of the harbor is really interesting because it has lots of different parts to it. On one side, you have tall buildings and busy streets, and on the other, you have peaceful parks and forests. There are also lots of islands in the harbor that have different types of wildlife and plants living on them.
The harbor is important because it provides homes for lots of different types of animals like fish and crabs, but sometimes it can also get polluted from things like oil spills or garbage. People work hard to keep the harbor clean so that everyone can enjoy it and the animals can stay healthy.
In summary, the New York-New Jersey Harbor Estuary is a big body of water where two rivers meet the ocean. It's important for boats to bring things to nearby cities and has different parts to it like tall buildings, peaceful parks, and islands. People work hard to keep it clean so that animals can live there and everyone can enjoy it.