Longlining is a fishing technique that involves using a main line with numerous baited hooks attached at intervals. This method allows fishermen to catch a variety of fish species, including tuna, swordfish, and cod. Longlines can be set at different depths, targeting specific fish that inhabit those areas. While longlining is effective, it can also lead to bycatch, which is the unintentional capture of non-target species like sea turtles and sharks. To mitigate this issue, regulations and best practices are often implemented to reduce the impact on marine ecosystems and promote sustainable fishing.