anand even the ngos woworking in the ocean, they know it. but nobody talks about it, because you can't prove it. how do you want to prove something that appears-- that happens tens or hundreds of miles offshore that you have never even seen? >> we were introduced to a former fisherman who agreed to speak openly about the hunting of dolphins. >> [speaking spanish] >> i went to see for myself if these stories are true, if fishermen really are hunting dolphins on the open seas. so, we've arrived at this desert fishing town in the middle of peru. this is where we've arranged to meet the long-liner fishing boat that's going to take us out for the next week out into the pacific ocean. in exchange for payment towards fuel costs and on strict condition of anonymity, we managed to gain access onto a shark fishing boat. once on board, the captain agreed to an interview, but only if we concealed his identity. >> [speaking spanish] >> if we kill an animal to eat it, a cow or a pig or something like this, we have very strong regulations. the animal has t