Free-floating Hydrophytes
* Water hyacinth (Eichhornia crassipes): A fast-growing, invasive plant often found in lakes and ponds.
* Duckweed (Lemna spp.): Small, free-floating plants that cover the surface of still water.
* Water fern (Azolla spp.): Tiny ferns that float on the water surface.
* Water lettuce (Pistia stratiotes): A rosette-forming plant with leaves that look like lettuce.
* Water lilies (Nymphaea spp.): Large, showy flowers with leaves that float on the surface.
Submerged Hydrophytes
* Elodea (Elodea canadensis): A common aquatic plant with long, narrow leaves that grow submerged.
* Vallisneria (Vallisneria americana): A ribbon-like plant with long, narrow leaves that grow from the bottom.
* Hydrilla (Hydrilla verticillata): An invasive plant with whorled leaves that can grow very quickly.
* Ceratophyllum (Ceratophyllum demersum): A submerged plant with forked leaves that lack roots.
* Chara (Chara spp.): Green algae that resemble small, branching plants.
Emergent Hydrophytes
* Cattails (Typha spp.): Tall, grass-like plants with long, brown, cylindrical spikes.
* Bulrushes (Scirpus spp.): Similar to cattails, with round stems and clusters of brown flowers.
* Water reeds (Phragmites australis): Tall, robust grasses that grow in wet areas.
* Arrowheads (Sagittaria spp.): Plants with arrow-shaped leaves that emerge from the water.
* Water willow (Salix nigra): A willow tree that tolerates wet conditions and grows along water edges.
Note: This is just a small sample of the many hydrophytes that exist. There are many other interesting and diverse species adapted to living in aquatic environments.