In pelagic longline fisheries, branchlines can be 40 m long. During hauling, each branchline is hauled individually on, or close to, the surface. At this time, birds will attempt to snatch retained bait. The use of a branchline hauler can speed up the hauling process making it more difficult for birds to catch bait.
- Birdlife International. 2014. Bycatch Mitigation Fact-sheet 12 (September 2014), Demersal and Pelagic Longline: Haul mitigation.