It wasn't until the 1960s that it was widely realized that this was not just a local Peruvian occurrence, but was associated with changes over the entire tropical Pacific and beyond.
Kodwa-ke, ngawo-60 baqala ukubona ukuthi kwakungeyona into yasendaweni ePeru, kepha lokho kuthinta iPacific yonke eshisayo, nangaphesheya kwayo.