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Red Tide Returns to Bay After Wet Winter

It’s back. Recent reports indicate the red tide that overtook San Francisco Bay last summer and killed untold numbers of fish and marine life is once again actively spreading in parts of the bay.

This week, scientists and environmental watchdog SF Baykeeper confirmed that Heterosigma akashiwo, a species that causes harmful algal blooms, was active in the waters near Alameda and Emeryville.

Harmful red tide returns to SF Bay after wet winter