Black Sea Water in China Due to Algae Decay: Concerns and Explanations

Sea Water Turns Black due to Algae Decay

Published on September 1, 2023 at 10:38 a.m.

In an alarming natural phenomenon, the sea water off the coast of Bohai Bay in Liaoning Province, northeast China, has turned black, leaving residents and authorities perplexed. According to reports from Sangyou Newspaper, the beach in Yingkou, Liaoning Province, has been affected by widespread algae decay, resulting in the unusual coloring of the ocean.

A video captured by a local resident depicts bathers submerging themselves in the darkened water, while relentless black waves crash against the pristine white sands of the beach. In the footage, residents express their astonishment, with one stating, “It appears as though soy sauce has been poured into the seawater.” Another video shows a child entering the sea wearing white clothes, only to emerge with the garments stained in a dark brown hue.

Authorities in Yingkou have attributed the color change to the rapid growth of spiny seaweed, which has thrived due to favorable conditions such as rising temperatures, heavy rain, and increased oxygen content in the water. This seasonal phenomenon, in which green algae diminishes during September, has perplexed experts and residents alike.

As concerns mount over this unsettling occurrence, authorities are closely monitoring the situation and conducting further investigations to better understand the causes and potential consequences of the blackened sea.

A Child’s Encounter with the Darkened Sea

As the sea water off the coast of Bohai Bay in Liaoning Province turns ominously black, residents are witnessing peculiar incidents that raise alarm. In a captured video, a child ventures into the darkened sea wearing white clothes, only to emerge with garments stained in a deep brown shade. What could have caused this unsettling transformation?

Authorities in Yingkou have shed light on the matter, pointing to the rapid proliferation of spiny seaweed as the culprit. This particular seaweed species, flourishing due to a combination of elevated temperatures, heavy rainfall, and oxygen-rich waters, is believed to be responsible for the sea’s unusual hue.

While this phenomenon aligns with the seasonal disappearance of green algae, which typically occurs in September, experts and residents alike remain bewildered by the extent and impact of this natural occurrence. As investigations continue, experts will strive to determine the potential consequences and long-term effects of the proliferation of blackened seawater.

Execution time2023-09-01 10:38

Sea water turned black due to algae decay

[웨이보 캡처]

(Beijing = Yonhap News) Reporter Han Jong-koo = On a beach in Bohai Bay, Liaoning Province, northeast China, the sea water has turned black due to large-scale algae decay.

According to the Chinese media Sangyou Newspaper on the 1st, the sea water on a beach in Yingkou, Liaoning Province, has recently turned black.

A video filmed by a resident showed people bathing in the black sea and black waves constantly crashing on the white sandy beach.

Residents said in the video, “It appears that soy sauce has been put in the seawater.”

In the video uploaded by another resident, the child went into the sea water wearing white clothes and came out and the clothes turned dark brown.

A child who came from the sea

[웨이보 캡처]

Authorities in Yingkou explained that a seaweed known as spiny seaweed has recently exploded, and that the color of the sea water has changed as this seaweed rots in the sea.

The increase in temperature, heavy rain and increased oxygen content created a favorable environment for the growth of algae, according to the authorities.

An official from Yingkou said, “It is a seasonal phenomenon where green algae disappear in September.”

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2023/09/01 10:38 Sent

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