During her first trip, Zakroff said she was stunned to see the amount of food in the dumpster. Boxes of lettuce just past their expiration dates, bags of freshly baked bread that won't sell the next morning, cans of tomato sauce too dented to be marketable. She said some stores donate food to shelters. But even so, the surplus of leftover food is overwhelming, and some things are bound to be thrown away. (Divers are obviously willing to risk eating spoiled food if it means they might save something edible in the process.)