Ruifang District, New Taipei City 226, Taiwan (ROC)
What a strange scene – a bay where the sea is a mix of yellow and blue! This is Yin Yang Sea (陰陽海), located beside the northern coastal road.
Located beside the northern coastal road in the Gold Ecological Park region is Yin Yang Sea, a curiously colored patch of water. The complementary blue and yellow coloring of this bay brings to mind the ancient Chinese principle of yin and yang, the natural concept of duality. Just as with the dichotomy of light and dark, or cold and hot, Yin Yang Sea expresses a natural balance of two sides of a mutual whole. This awe-inspiring scene provides a perfect opportunity to pause and contemplate what other contrary forces in nature are actually interconnected concepts. Remove assumptions, take a step back, and open your mind to the beauty of nature.
Due to the pollution from nearby mining activities in years past, local belief has it that the coloration of this bay was caused by chemical runoff. Yet, even many years after the closure of all mines, the unusual hue of the water remains. After closer examination, it appears this blue/yellow coloring is a result of the insoluble floating iron ions from the heavy concentration of pyrite (also known as “Fool's Gold”) in the area.
Because of the highly concentrated heavy metal ions in the water, it's strongly recommended not to go into the water.