Purse-seine vessels fish either by spotting free-swimming schools of tuna or by utilizing floating objects that attract fish, either with natural or manmade objects such as fish aggregating devices (FADs).
According to an ISSF-commissioned study, purse seine vessels consume 368 liters of fuel in order to land one ton of tuna.
On our ISSF Guidebooks site, we offer online and downloadable PDF guides for purse seine fishers in several languages. The skippers guidebook covers FADs, bycatch mitigation and handling, fisheries management, and other topics.
Observers who work on purse seiners also have access to online and PDF guides that highlight purse-seine fishing techniques, species identification, bycatch, scientific sampling, and fisheries management.