A shark swims in the water off Capo Beach in Dana Point, California, on Thursday, May 11, 2017.
Lifeguards Chief in Orange County, Jason Young, said to the Register of how multiple reports of sharks being spotted in the Capo Beach region have caused alarm.
What does all this mean for beachgoers?
"Be advised state parks is asking us to make an announcement to let you know that you are paddleboarding next to approximately 15 great white sharks".
"During the day, they hang out very close to the surface in relatively shallow water relatively close to the beach", Lowe said. Afterward, they head back down to Baja California.
"The fish are thriving so the sharks are coming to feed on the fish", said Cpt. Those islands are rookeries for seals and sea lions, some of the sharks' favorite meals.
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There have been several great white shark sightings in the area off the coast of Southern California since the beginning of the year.
Since 1950, there have been less than two dozen confirmed shark attacks in San Diego County - and only two fatalities among those incidents.
The sharks migrate south when the waters off California dip below 60 degrees in the winter.
Above: Declines in estimated relative abundance for coastal shark species: (A) hammerhead, (B) white, (C) tiger, and (D) coastal shark species; and oceanic shark species: (E) thresher, (F) blue, (G) mako, and (H) oceanic whitetip.
Lowe is trying to figure out why there's such a large number of sharks so early in the year. Leeanne Ericson, 35, suffered significant blood loss after she was bitten on her right thigh and buttock by a shark when she was swimming in the area. "We share that space with the sharks and always have to remember that", Nosal told Live Science.