Trawling nets, also known as SEINES, are large fishing nets that are used to catch fish in shallow waters. They are typically set in a straight line and then dragged along the bottom of the ocean or lake. The net is held open by floats on the top and weights on the bottom, allowing it to capture a wide variety of fish. Trawling nets are an important tool for commercial fishermen, as they allow them to catch large amounts of fish quickly and efficiently.