Nets have been given a natural size limitation of fishery art. The following types of nets may be used by fisheries such as: gillnets, tangle nets, trammel nets, beach seines, lampara nets bags, (small). The bottom of shallow water trawinets is to lift their nets and swing their nets.Gillnets are usually much longer, rectangular, with floating lines (or corks) along the top edge and lead lines (weight) along the bottom edge.