Longline fishing is a commercial fishing technique that uses a long main line, called a longline, with many baited hooks attached at intervals. This method allows fishermen to catch a variety of fish species, including tuna, swordfish, and cod. Longline fishing can be done in both deep and shallow waters, making it a versatile approach for targeting different fish populations. While effective, longline fishing can also pose environmental concerns. It may unintentionally catch non-target species, known as bycatch, including sea turtles and sharks. To mitigate these impacts, regulations and best practices are being developed to promote sustainable fishing methods.