Scientists say 90% of the world’s open-ocean sharks died off in mystery extinction event 19 million years ago

CNN

By Alaa Elassar, CNN

Updated 2:01 AM ET, Sun June 13, 2021

About 19 million years ago, roughly 90% of the world’s open-ocean sharks died off, and scientists don’t know why.

Read more… https://www.cnn.com/2021/06/13/us/mystery-event-wiped-90-percent-sharks-millions-scn/index.html