In Ancient Chinese philosophy, yin and yang is a concept of dualism, describing how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent in the natural world, and how they may give rise to each other as they interrelate to one another.
This illustration portrays an underwater representation of this duality. They complete each other and become one with themselves and the water, as they already were. The illusion of duality ceases.