Water lilies are beautiful aquatic plants that float on the surface of ponds and lakes. They have large, round leaves called lily pads that can be green or reddish in color. The flowers bloom in various shades, including white, pink, and yellow, and they often open during the day and close at night. These plants are part of the Nymphaeaceae family and play an important role in their ecosystems. They provide shade and shelter for fish and other aquatic life, while also helping to keep the water clean by absorbing nutrients and filtering pollutants.