Heal the bay Volunteer Amy Limon, 18, and Nicole Torosian, 8, spray water onto the Watershed Diorama at the Santa Monica Pier Aquarium (SMPA) during its Earth Day theme weekend on Sunday, 18, 2010. The diorama, which was custom made for Heal the Bay by Andrew C. Aguilar, is designed for pollution education and to illustrate storm water runoff.