A key population of humpback whales is in recovery after it was pushed close to extinction by centuries of exploitation, according to a new study.
원문출처 : https://www.cnn.com/2019/10/17/world/humpback-whale-recovery-intl-scli-scn/index.html
원문출처 : https://www.cnn.com/2019/10/17/world/humpback-whale-recovery-intl-scli-scn/index.html