Tuna fishing methods
How pelagic longlines work
Baited hooks are attached to the longline by short lines called snoods that are clipped on to the mainline.
The longline can be many kilometres long and can carry thousands of hooks.
Pelagic longlines are not anchored and are set to drift in the pelagic layer of the ocean with a radio beacon attached so that the vessel can track and find them to haul in the catch.