통발 is a traditional Korean fishing trap used to catch fish and other aquatic creatures. It is typically made from bamboo or other flexible materials, shaped like a cone or cylinder. The design allows fish to enter easily but makes it difficult for them to escape. This fishing method is often employed in rivers and streams, where it can be placed in shallow waters. The use of 통발 is an example of sustainable fishing practices, as it minimizes bycatch and allows for the selective capture of target species, contributing to the preservation of aquatic ecosystems.