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Environment·19/04/2026Résumé IA
Why are gray whales dying in San Francisco's waters? US scientists search for clues
A record 21 dead gray whales were found in San Francisco Bay in 2025, with seven more dead so far this year. Scientists attribute the deaths to dwindling prey in the Arctic, climate change, and ship strikes. The population has crashed from 27,000 in 2016 to 12,500 in 2025, classified as an 'unusual mortality event' by NOAA. The bay has become a new habitat for gray whales since 2018, but nearly one-fifth of those entering the bay have died there.
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BBC News4 min de lecture