Despite controls, violations of drift net fishing laws are commonplace. They were designed to catch herring in a long drift net. The UAE has additionally banned drift net fishing. The species is caught by set net, drift net, and longline fisheries. Most countries regulate drift net fisheries within their territories. Many individuals of non-target species perish as by-catch in the cast of each drift net. The traditional method used for catching herring was the drift net. Drift net fishing became a commercial fishing practice because it is cost effective. A drift net consists of one or more panels of webbing fastened together. In 1998, "Boutwell" made the largest high-seas drift net arrest in Coast Guard history. Japan operated about 900 drift net vessels, earning around $300 million a year. The drift net has a low fuel/fish energy consumption compared to other fishing gear.