This September 2010 photo provided by Andrew Nosal shows leopard sharks at La Jolla Shores Beach in La Jolla, Calif. Nosal, a postdoctoral researcher at
This September 2010 photo provided by Andrew Nosal shows leopard sharks at La Jolla Shores Beach in La Jolla, Calif. Nosal, a postdoctoral researcher at the Birch Aquarium in La Jolla, says he shot the image by mounting his camera beneath a large helium balloon tethered about 100 feet above the water surface. The sharks attract onlookers when they come close to shore from June to early December, peaking between August and September, along a small stretch of this beach north of San Diego. (AP Photo/Andrew Nosal) ( Andrew Nosal) )