A leopard shark at the Monterey Bay Aquarium. Scientists are puzzled by a recent die-off of the sharks in San Francisco Bay.
A leopard shark at the Monterey Bay Aquarium. Scientists are puzzled by a recent die-off of the sharks in San Francisco Bay. Don Sweeney dsweeney@sacbee.com
A leopard shark at the Monterey Bay Aquarium. Scientists are puzzled by a recent die-off of the sharks in San Francisco Bay. Don Sweeney dsweeney@sacbee.com

Sharks are dying in San Francisco Bay. No one’s sure why.

May 13, 2017 10:18 AM

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