Aquatic plants, also called hydrophytic plants or hydrophytes. Aquatic plants are plants that have adapted to living in, on, or next to water, that can only grow either submerged or partially submerged in water.
Many species of aquatic plant are invasive species in different parts of the world, aquatic plants make particularly good weeds because they can reproduce vegetatively from fragments.
General reference
Cook, C.D.K. (ed). 1974. Water Plants of the World. Dr W Junk Publishers, The Hague. ISBN: 90 6193 024 3
Seaweeds are not vascular plants but multicellular marinealgae, and therefore not typically included in the category, "aquaticplants." As opposed to plants types such as mesophytes and xerophytes, hydrophytes do not have a problem in retaining water due to the abundance of water in its environment.
Aquaticplants are essential to a healthy pond ecosystem.
Submerged aquatic vegetation are plants that are completely under the water and typically have a root system in the bottom sediment.
Some treat certain aquaticplants better than other treatments, and since there are many types of aquaticplants, it is a good idea to talk with a local lake management professional to get some assistance in identifying the type of aquaticplant problem and develop a plan for the best solution to that problem.