Okay, imagine a big turtle swimming in the ocean. Turtle Island is like the shell of the turtle that we live on. But instead of a real turtle, it's actually a nickname for North America, especially used by some Indigenous peoples. They believe that the land we live on is like a turtle shell because it's important to protect and take care of, just like how we should protect a real turtle. So, when people talk about Turtle Island, they are talking about the land we live on and the importance of taking care of it.