Why did four whales wash up in San Francisco Bay in a week and a half?

Alameda County firefighters spray water on a beached juvenile minke whale to keep it comfortable in Emeryville, Calif., on Tuesday, April 8, 2025. (Jane Tyska/Bay Area News Group)

By Caelyn Pender | [email protected] | Bay Area News Group

UPDATED: April 21, 2025 at 9:23 AM PDT

Taken together, the deaths have raised the specter of past “unusual mortality events” that caused whales to die in higher-than-normal numbers.

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Originally Published: April 18, 2025 at 5:45 AM PDT

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Why did four whales wash up in San Francisco Bay in a week and a half?

Scientists are looking closely at “the bigger picture of what’s happening”

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