Santa Monica College Student Erick Zavala, 20, places a leaf on  the ‘Pledge Tree’ during SMC’s Earth Day Festival on Thursday, April 21, 2011. Zavala’s pledge is to grow more of his own food.

Lukas Kovacevich, 2, with his mother Karen Ogle, gives a high five to the Easter Bunny at Santa Monica Place on Wednesday, April 20, 2011.

Billy Kincaid, 9, and his brother Johnny, 5, strum the acoustic guitars, play the  harmonica, and sing classic, country and rock at Santa Monica Ocean Front Walk on Saturday, April 16, 2011. 

Santa Monica Police Department Sergeant Phillbo Rubish (Traffic Service Division) checks-out the all electric parking enforcement vehicle prototype named "Firefly" on Monday, April 18, 2011. The Firefly is built by the Good Earth Energy Conservation Inc. (GEEC)

Thousands of people gather at the Santa Monica Beach shoreline on Saturday, April 16, 2011. 

The Mckinnon Secondary College stage band, from Australia, performs on the Santa Monica Pier on Friday, April 15, 2011.

Artist and owner of the Infinity Art Studio , Susan Weinberg, works on her environmental art piece at Ocean Front Walk  on Thursday, April 14, 2011. The art piece is made from seashells and other organic items gathered from the shoreline.

Santa Monica Police Activity League (PAL) members Cesar Rodriguez, 12, (left) and Christopher Herrera, 17,  box at Will Rogers State Park during PAL’s  'Spring Fling' on Thursday, April 14, 2011.