Climate change is pushing starving gray whales into the San Francisco Bay in unusual numbers, where ship strikes killed at least 40% of the 21 whales found dead last year.

Climate change is pushing starving gray whales into the San Francisco Bay in unusual numbers, where ship strikes killed at least 40% of the 21 whales found dead last year.

The effort comes amid an alarming rise in gray whale deaths in the bay, with 21 dead gray whales found in the wider Bay Area last year.