Imagine you have your own backyard and you have a fence that separates your yard from your neighbor's yard. Now, imagine if you and your neighbor decided to take down that fence and share both yards together. That's kind of like what a transboundary protected area is.
A transboundary protected area is a place that is protected by two or more countries because it's really special and important to everyone. This place might have a lot of unique plants and animals that only live there. It might have special cultural or historical significance, like being a place where important events happened a long time ago.
To protect this special place, the different countries work together to create rules and laws that everyone agrees to follow. They might create a team of people to work together to enforce these rules and make sure everyone is taking care of the protected area. They might also create educational programs to teach people about how special and important this place is so everyone can understand why it's so important to take care of it.
So, a transboundary protected area is like a giant, shared backyard that everyone works together to take care of so it can stay really special and important for a long time.