Bladder

wort Bladderwort (Utricularia) is a genus of carnivorous aquatic and semi-aquatic plants. They are widely distributed on every continent except Antarctica, and are found in both fresh and salt water, as well as in wet soil. Bladderworts have bladder-like structures, which are filled with water and covered in hair-like projections, that act as traps to capture small aquatic animals such as nematodes and rotifers. By doing this, bladderworts are able to obtain the nitrogen they need to grow and survive, instead of obtaining it through the soil or water. Bladderworts can be beneficial in controlling aquatic pest populations, and their ability to absorb nutrients from their natural environment, makes them important in controlling water pollution.