Bob Kaltreider spotted a harbor porpoise in the Napa River near his home in July 2015. Marine biologist Bill Keener says the porpoises enter the Napa area occasionally, but mostly live in the San Franscisco Bay.
Bob Kaltreider spotted a harbor porpoise in the Napa River near his home in July 2015. Marine biologist Bill Keener says the porpoises enter the Napa area occasionally, but mostly live in the San Franscisco Bay. Photo courtesy of Bob Kaltreider
Bob Kaltreider spotted a harbor porpoise in the Napa River near his home in July 2015. Marine biologist Bill Keener says the porpoises enter the Napa area occasionally, but mostly live in the San Franscisco Bay. Photo courtesy of Bob Kaltreider