We can't quite say sharks can be friends, but new evidence is showing us that sharks form social bonds with others and can work together — to a degree.
원문출처 : https://www.cnn.com/2020/08/11/world/sharks-social-groups-scn/index.html
원문출처 : https://www.cnn.com/2020/08/11/world/sharks-social-groups-scn/index.html