Water molds, also known as oomycetes, are a fascinating group of organisms that play a crucial role in various ecosystems. These unique microorganisms were once classified as fungi due to their similar filamentous structures, but they are now recognized as distinct organisms with their own characteristics and evolutionary history. With over 800 species identified so far, water molds exhibit incredible diversity in their habitats, appearances, and lifestyles. From their impact on agriculture to their role in nutrient cycling in aquatic environments, water molds have significant ecological and economic importance. In this article, we'll delve into 20 intriguing facts about water molds, shedding light on their biology, ecological interactions, and the critical role they play in the natural world.