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TED-Ed
TED-ED: The science of symmetry - Colm Kelleher
When you hear the word symmetry, you might think generally of triangles, butterflies, or even ballerinas. But defined scientifically, symmetry is _a transformation that leaves an object unchanged." Huh? Colm Kelleher unpacks this...
Sea Studios Foundation
Shape of Life: Echinoderm Animation: Five Part Symmetry
The five-part symmetry of echinoderms is demonstrated, as the five-armed starfish is morphed into an urchin that is then morphed into a sea cucumber. [1:42]