What are examples of plants that grow underwater?

Assuming you mean totally under water, and by plant you mean vascular plant, then there are several examples. read more

There are so many plants that grow under water.They may includes Algae are the plants that have no roots, stems, or leaves and grow in water or in other wet places, Duckweed is a plant that grows on rivers and ponds, kelp are large brown type of seaweed (=a plant that grows in the sea),reed is a tall thin plant that grows near water. read more

A few aquatic plants are able to survive in brackish, saline, and salt water. The only angiosperms capable of growing completely submerged in seawater are the seagrasses. Examples are found in genera such as Thalassia and Zostera. Although most aquatic plants can reproduce by flowering and setting seed, many also have extensive asexual reproduction by means of rhizomes, turions, and fragments in general. read more

Curly pondweed plants increase the level of oxygen in the water, which is a vital part of a healthy, aquatic ecosystem, according to the USDA Natural Resources Conservation Service. In the autumn, the plants sprout from dormant stem structures, called turions. During the winter beneath the ice, the plants grow rapidly, forming dense mats. read more