Fishing Gear

    Longline, purse seine, pole and line and troll fishing gears are employed in pelagic tuna and billfish fisheries. However, there is very little bycatch associated with pole and line fishing and there are very few commercial vessels trolling for tuna. For these reasons, the BMIS focuses on longline and purse seine fishing gear.

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    Longline

    Drifting longlines are used in pelagic fisheries targeting tuna and billfish. The longline, or mainline, is suspended horizontally at a pre-determined depth in the water column by buoy lines attached to regularly spaced surface floats.