Tattoo design portraying a sun and a moon entangled in a snake. Sun and moon tattoo designs are very popular, not only due to their ethereal beauty, but also the heavy symbolism they hold. They represent unison between two opposing forces and the duality of life – good and bad, dark and light, masculine and feminine, etc. The snake represents transformation and wisdom, and it wraps around a set of leaves to add a down-to-earth touch to the design.