The largest algal bloom to threaten San Francisco Bay in recent memory has finally receded, but the creature that triggered it still lurks in the bay’s blue waters, waiting for the right conditions to strike. Heterosigma akashiwo, an organism known to spawn red tides, turned the bay tea-brown this summer, killing untold numbers of fish and other marine life, including bat rays, gobies and polychaetes.
Like a real-life horror show, San Francisco Bay algal bloom is expected to returnSource: San Francisco Examiner