For instance, some sea urchins and starfish have pentaradial or five-fold symmetry, that is, symmetry with respect to rotations of 72 degrees around their center.
Neki morski ježevi i zvjezdače, recimo, imaju peterozrakastu ili peterostruku simetriju, to jest, simetriju s obzirom na rotaciju od 72 stupnja oko njihova središta.