Wallacea is a place on Earth, kind of like your bedroom or your backyard. But instead of your bedroom or backyard, Wallacea is a special area in Indonesia that has lots of different islands. There are a whole bunch of islands in Wallacea, and each one is kind of like its own little world!
The animals and plants that live on these islands are special because they are different from the animals and plants on other islands nearby. That's because Wallacea is kind of like a bridge between two big areas of the world with lots of different animals and plants. Imagine if you were playing with toys in your bedroom, but then you walked into your backyard and found a whole bunch of new toys that you've never seen before. That's kind of like what happens in Wallacea!
Scientists like to study Wallacea because they can learn a lot about how animals and plants evolve and how they are different from each other. And when people learn more about the animals and plants in Wallacea, it can help them figure out how to protect these special parts of the Earth.