Research indicates that a sound-emitting device called an acoustic pinger effectively scares porpoises away from fishing nets, preventing them from being unintentionally caught. Nets equipped with the pingers caught only 2 porpoises, compared to 25 caught in nets with inactivated pingers.
The North Carolina Sea Grant and the state Office of Waste Reduction coordinated a program intended to provide fishermen with an alternative to disposing of old gear. The program involved the use of dumpsters donated by local waste haulers which were placed on properties also volunteered by local seafood dealers, fish houses and other businesses. The total collected gear weighed 22 tons and was fully recycled. The project showcased the effectivity of government-fishermen cooperation.
In the early 1970s, fisherman Harry Brown, of Cameron, La., participated in a fish removal program in Sam Rayburn Lake in eastern Texas. His mission was to help reduce the population of a fish that was suspected of crowding out more desirable freshwater gamefish. The culprit? The carp-like buffalo fish.