The waters at Avila and Port San Luis beaches will be closed through Monday after a boater spotted a shark between the two piers around 7 p.m. Wednesday.
The beaches are open, but signs posted in the sand warn beach-goers of the sighting.
In August 2003, the Port San Luis Harbor District voted to close the waters off its beaches for five days anytime a credible shark sighting was reported. The decision came days after a great white shark bit and killed swimmer Deborah Franzman of Nipomo as she was swimming with seals off Avila Beach.
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