For the first time, scientists have recorded the heart rate of a blue whale, uncovering new information about the biology of the world's largest mammal.
원문출처 : https://www.cnn.com/2019/11/26/americas/blue-whale-heart-beat-scn-intl-scli/index.html
원문출처 : https://www.cnn.com/2019/11/26/americas/blue-whale-heart-beat-scn-intl-scli/index.html