Swimming deep in the Pacific Ocean, a group of little-known killer whales that eat large sea mammals including grey whale calves has been found, researchers say.
원문출처 : https://www.cnn.com/2021/10/08/world/ubc-researchers-killer-whale-transient-scn-trnd/index.html
원문출처 : https://www.cnn.com/2021/10/08/world/ubc-researchers-killer-whale-transient-scn-trnd/index.html