Just some of our collection. The sand dollars are still covered in little spiny hairs that will fall off, they are then greenish purple brown. They whiten in the sun or as rinsed in fresh water with bleach. I will then paint them with a 1/2 part elmers glue mixed with 1/2 part water to help harden their shell. The little starfish are soft in the water and can easily break. After rinsing them for a few hours in fresh water, they need to dry completely in the sun to harden and then painted with the same glue mix to help protect them.