Let's start by understanding how important are wetlands to our planet's biodiversity. Wetlands are biological super systems, and the amount of living species that only exist on swamps, marshes, bogs and fens is amazingly diverse and interesting especially when you take in consideration how small these areas are.
The biggest wetland in the world is situated in Brazil, and it's called the Pantanal. It covers 42 Million acres and its home to over 4,700 different species. These biological bombs are possible due to the fact that these areas are always incredibly rich on nutrients, while remaining particularly different from the rest of the world. Let's quickly understand why. Most of the wetlands that we nowadays have are living fossils of forests from the Palaeolithic, in fact just as animals evolved from water to land, so did plants, and, especially in swamps, the species we have are to plants what crocodiles are to animals. And this uniqueness not only gives us some of the most beautiful places on earth, it also allows for species to exist only in these places.
But biodiversity is not just important because it's "nice to look at". The more diverse our ecosystems are, the more balanced and independent they become. The concept of independent ecosystems might seem complex at first but it's actually a very simple and essential concept. If our ecosystems, regardless of how small they are, become fully independent again, then we have a self-regenerating wild area. And when talking about wetlands this is incredibly important, after all this simple process of letting nature be natural is like creating an expensive carbon absorber machine that's able to capture up to 30% of the CO2 in our atmosphere. Except it's for free, doesn't involve any big technological advances and it keeps our beautiful world as it is.
The world is an amazingly complex self-regenerating system, and all we need to do is avoid interfering with it, something a lazy specie like ours should excel at.