It is crazy to think that there are even water plants that are carnivorous. Aquatic bladderworts normally grow in still water like ponds and small lakes and feed off of any small creatures like water fleas and can even eat small tadpoles if they their traps are big enough. Most of the nutrients they get are from the organisms they digest. They also however have leaves that photosynthesize but no roots, so they just float in the water.
Their Traps are really remarkable as they can trap prey in less than a second. They are designed in such a way that they seal completely shut and are able to release the water inside through the trap walls, creating a vacuum inside. At the opening in the trap there is a door surrounded by trigger hairs, that once disturbed, triggers the door to open and the small creature to be sucked in. The door closes immediately and then the digestive process begins by the secretion of digestive enzymes and is complete within a few days. To attract pray the traps secrete a gooey substance that is sweet and the highest concentration is always at the door to the trap.
The flowers of aquatic bladderworts are the only part of the plant that sticks out of the water like in the picture bellow. They come in many colors, some being self pollinated while others get pollinated by insects. They produce many tiny seeds is they are successfully pollinated.