Wetlands are unique and dynamic ecosystems that play an essential role in sustaining biodiversity in this earth. Exploring the relationship between wetlands and biodiversity, highlighting the crucial role wetlands play in supporting and maintaining diverse life forms from extinction. This book aims to explore the rich biodiversity surrounding wetlands while fostering an enhanced understanding of wetlands through the expansion of English vocabularies related to wetland ecosystems. By acting as natural habitats, wetlands provide a conducive environment for a wide array of flora and fauna, ranging from specialized aquatic plants to terrestrial and migratory species. Various examples of wetland biodiversity include migratory birds, amphibians, aquatic plants, and fish.