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