Along with Galapagos islands, sea lions ("Zalophus wollebaeki") being affected are the Australian sea lions ("Neophoca cinerea"). The same method was used for the sea pups on the galapagos island, but in addition, the researchers in Australia took blood samples. The pups in Australia were being affected by hookworms, but they were also coming out in large numbers with warmer temperatures. Sea pups in New Zealand ("Phocarctos hookeri") were also affected really early ages by hookworms (Uncinaria). The difference is that in New Zealand researchers took the necessary steps and began treatment. The treatment seemed to be effective on the pups who have taken it. They found no traces of this infection afterwards. However, the percentage of pups who do have it is still relatively high at about 75%. Those pups who were treated had much better growth rates than those who did not. Overall parasites and hookworms are killing off enough pups to place them in endangerment. Parasites affect sea pups in various areas of the world. Reproductive success reduces immensely, survival methods, changes in health and growth have also been affected.