Scientists sound alarm after documenting mass evacuation of sperm whales: ‘A sentinel signal’

https://www.yahoo.com/news/scientists-sound-alarm-documenting-mass-104547743.html

“The departure of sperm whales from the Gulf of California serves as a sentinel signal, reflecting significant shifts in marine ecosystems,” lead author Héctor Pérez-Puig, of the Prescott College Kino Bay Center for Cultural and Ecological Studies, said in a statement to The Hill