Sculpt A Sea Urchin

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The shells of sea urchins are beautiful natural sculptures with incredible detail, color and symmetry.

A mock version of a sea urchin can be created by casting plaster in upcycled plastic drink bottles or containers, then applying dots of paint to indicate tubers. Group many sea urchin sculptu...

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Instructions

Step 1: Pour plaster into the base of plastic container such as a water or soda bottle. Let dry. Step 2: Paint the plaster a base color using liquid watercolors. Step 3: Embellish with dots of acrylic paint.