Hydrilla is an aquatic plant native to Africa, Asia, and Australia, but it has spread to many parts of the world, including the United States. It thrives in freshwater environments, such as lakes, ponds, and rivers, where it can grow rapidly, forming dense mats that can disrupt local ecosystems. This invasive species can outcompete native plants for sunlight and nutrients, leading to reduced biodiversity. Hydrilla can also hinder recreational activities like fishing and boating, and it may affect water quality by altering oxygen levels in the water. Effective management strategies are essential to control its spread.