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Typhoon Noul | 'Yin-Yang Sea' phenomenon appears off Castle Peak Road! Striking contrast between yellow and blue waters

Hong Kong
2026.07.26 19:28
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The "Yin-Yang Sea" off the coast near the Castle Peak Road hotel. (DotDotNews)

As Typhoon Noul struck Hong Kong, bringing heavy rain and fierce winds, mud and debris washed down hillsides and poured into the sea. Off the coast near the Castle Peak Road - Mirage Hotel, members of the public captured images of muddy yellow water from the hills meeting the sea, creating a striking blue-and-yellow "Yin-Yang Sea."

It is understood that the "Yin-Yang Sea" phenomenon occurs after typhoons due to differences in turbidity and depth between the two bodies of water. During the typhoon, heavy rain carried silt and sediment from the hills into the sea, causing the nearshore water to appear yellowish, while the offshore water remained relatively clear and appeared blue-green under sunlight. As the two types of water did not mix immediately, a distinct boundary line formed, creating the "Yin-Yang Sea."

The "Yin-Yang Sea" off the coast near the Castle Peak Road hotel. (DotDotNews)

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Tag:·Yin-Yang Sea· Typhoon Noul· sea· colour sea

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