I think they work with a placeholder system like in FFXI. I saw the pampa twice (and it is right next to the first confluence, I don't think it s a coincidence, as people usually kill a few pampa while going there usually) and we spawned a NM squid (the lord of anemos) in the river at the far east of the map by killing squids there with my FC group. Now we only need to figure out exactly where the PH are.
