Recently a California woman was seriously injured by a shark off of the coast of San Clemente.
This follows another attack of a swimmer last Memorial Day, when a woman training for a triathlon nearly died after being mauled by a great white shark.
The attacks are the first on record in Orange County, a place where for decades, shark sightings were rare and usually confined to juveniles.
Many residents fear that it might be a new pattern. We talked to Chris Lowe, the head of the Shark Lab at Cal State - Long Beach.