Water plants
Water (or Aquatic) Plants, plants that live in water. Some plants live submerged in water, either fixed in place or freely floating. Others float on the surface. Still others are attached to the bottom, with most of the plant growing above the water or with only leaves and flowers exposed to the air.
Aquatic plants provide food for such animals as fish, ducks, geese, muskrats, and moose; human beings also use water plants as food. Through photosynthesis, water plants produce oxygen that is used by fish and protozoans. In ponds, small lakes, and rivers, an abundance of water plants can sometimes become a nuisance by causing stagnation, by giving off foul odors when they die and decay, and by impeding navigation. Chemical, mechanical, and other methods are used to control or eradicate undesirable aquatic plants.
Cranberries are water plants.