Longlines consist of a mainline, gangions, and baited hooks. Pelagic longline. A high-flyer buoy is used to monitor gear position while fishing, and lightsticks are often used to target certain species. The longline set can be suspended at any depth within the water column, depending on target species.
Dorado (Mahi Mahi) California Sea Grant
Tackling accidental fisheries bycatch: A win-win operation
Research Report, Details
Sea turtles and ocean fisheries
Longlines Marine Stewardship Council
Pelagic fishing gear: (a) driftnets, and (b) longlines (after Moore and
Sickle Pomfret California Sea Grant
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Figure 1 from Pelagic Longline Fishing Gear: A Brief History and Review of Research Efforts to Improve Selectivity
West Coast Region Observer Program
PDF) Performance Assessment of Bycatch and Discards Governance by Regional Fisheries Management Organizations
Method for estimating buoyancy of midwater float required to standardize hook depth in pelagic longline
Schematic diagram (not to scale) of coastal pelagic longline gear