Trap nets are specialized fishing nets designed to capture fish without harming them. They consist of a series of large, anchored nets that create a funnel-like structure, guiding fish into a confined area. This method is often used for research purposes or to catch specific species while allowing others to escape. These nets are typically made from durable materials like nylon or polyethylene, ensuring they can withstand various water conditions. Trap nets are commonly employed in both freshwater and saltwater environments, making them versatile tools for fisheries and conservation efforts, as they help monitor fish populations and maintain ecological balance.