Lake Union

Lake Union is like a giant puddle of water where boats and other watercraft can float around. It's very big and has lots of different areas for people to explore. The water comes from a bunch of small streams and rain, and it stays in the lake because there is a big dam holding it back. Many people like to go on boats and sail on the lake or take a swim in the water when it's warm outside. There are also parks and restaurants nearby where people can relax and enjoy the view of the lake. So basically, Lake Union is like a really big swimming pool for boats and people to have fun in!