In a recent study by Stanford and UC Davis, Great Whites were tagged and tracked between the Farallons and the SF Bay. They definitely enter the bay.... although there are NO reported attacks on swimmers
Excerpt below:
They visit the bay
Still, it can't be comforting for swimmers at Aquatic Park to know that the acoustic tags recorded five great whites inside the entrance to San Francisco Bay in 2007 and 2008. The researchers don't know what the sharks did or how long they stayed, but it does suggest to swimmers that flopping around in the water between August and December might not be a good idea.
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