APTOS (CBS SF) -- A competition for junior lifeguards had to be called off after more than a dozen great white sharks near the cement ship in the Aptos area south of Santa Cruz.
"Today I went up with Specialized Helicopters and we witnessed a once-in-a-lifetime-event. We saw over 15 white sharks swimming within a quarter mile radius," boat captain Giancarlo Thomae told KSBW.
Jason Hoppin tweeted "Kayak guide Giancarlo Thomae reports more than 15 great whites today within a quarter-mile of Cement Ship in Aptos."
Area Surf tweeted "15 great white sharks spotted in Aptos today. #santacruz #surf."
The NorCal Junior Lifeguards competition was called off due to the sighting.
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