Biologist says polar animals are incredibly sensitive to temperature changes . Comment: Changes `` should be taken as warning of what may be coming elsewhere '' Once heavily hunted , humpback whales that feed on krill have made a comeback in Antarctic waters . The temperature in the western Antarctic is up .9 degree Fahrenheit . Krill may be among the first animals to have to adapt to warming temperatures .
Biologist says polar animals are incredibly sensitive to temperature changes . Comment: Changes `` should be taken as warning of what may be coming elsewhere '' The temperature in the western Antarctic is up .9 degree Fahrenheit . Krill may be among the first animals to have to adapt to warming temperatures .