Aquatic insects are insects that live in or near water during part or all of their life cycle. They can be found in various aquatic environments, including rivers, lakes, ponds, and wetlands. Common examples include dragonflies, mayflies, and water beetles. These insects play essential roles in the ecosystem, serving as food for fish and other wildlife. Many aquatic insects have specialized adaptations for life in water, such as gills for breathing or streamlined bodies for swimming. They often undergo metamorphosis, transitioning from aquatic larvae to adult forms that may live on land. Their presence indicates water quality and ecosystem health.