Water plants, also known as aquatic plants, are plants that grow in or near water bodies such as lakes, rivers, and ponds. They can be fully submerged, partially submerged, or floating on the water's surface. These plants play a crucial role in their ecosystems by providing oxygen, serving as habitats for various aquatic animals, and helping to filter pollutants from the water. Common types of water plants include lilies, cattails, and duckweed. They can be categorized into different groups based on their growth patterns, such as emergent, submerged, and free-floating plants. Water plants are essential for maintaining the health of aquatic environments and supporting biodiversity.