hudsdson: the gogood ns isis the e pacific isisland couuntries have taken concrete ststeps towardrd improg their understandiding of the fisherieies, improving andnd puputting in p place management regegimes and m monitoringg compliance regimes that if they carry them forward in full, which i thihink they're capablef doing, could lead to true sustaininability for those fisheries going forward. narrator: managing the tuna fisheries depends u upon knowing more about what tuna do in the ocean. researchers for the secretariat of the pacific community are tagging thousands of tuna with devices that will provide important data. tags tell scientists how far tuna travel, how fast they grow, and how deep they go for food. the tagging essentially allows the tuna to talk to scientists who will use the information to protect them f from being overfishshed. womanan: this one was in 2011 ad we see itit only now. narratator: more than 60,000 tas have been released. nowhere are people more protective of their fisheries than in the western and central pacific. it's a way of life. it defines their culture. i