filiberto sanchez dias workrks for the artisanal fishereries association. >> [speaking spanish] >> i am surprised to hear that they claim they don't know it happens, because, you know, th--there's a lot of published literature in the scientific community, as welell as, um, non-government groups. there's no way that anybody can deny this is happening. the proof is there, the photograph, the film, um, it--it's all there. >> there are, at the last count, in 2010, over 500 boats like the one we traveled on for a week. if, as the testimonies we've recorded are true, on each trip they kill an average of 2, 3 dolphins, and they're doing over a dozen trips each year. that means thousands, thousands of dolphins being killed to be used as shark bait. >> if you kill animals at this level, it's going to have a severe impact on their numbers. and i--i fear for dolphins and porpoises in peru. i really do. i think it's--it's decades now of impact at this level, so, um, i think that itit--it's urgent. we need to take action now to secure their future, definitely. >> 1,600 miles north of peru, in nic