“Red Tide”: The Natural Luminescence Phenomenon

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Glow-in-the-dark blue waves caused by the phenomenon known as harmful algal bloom or “red tide”, are seen at night near Sam Mun Tsai beach in Hong Kong January 22, 2015. Algal blooms occur when there is a sharp growth in algae population in a water system, and are considered harmful when resulting in negative impacts on other organisms. Picture taken using long exposure. (Photo by Tyrone Siu/Reuters)

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This Thursday, January 22, 2015 photo made with a long exposure shows the glow from a Noctiluca scintillans algal bloom along the seashore in Hong Kong. The luminescence, also called Sea Sparkle, is triggered by farm pollution that can be devastating to marine life and local fisheries, according to University of Georgia oceanographer Samantha Joye. Noctiluca itself does not produce neurotoxins like other similar organisms do. But its role as both prey and predator tends can eventually magnify the accumulation of toxins in the food chain, according to R. Eugene Turner at Louisiana State University. (Photo by Kin Cheung/AP Photo)

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Glow-in-the-dark blue waves caused by the phenomenon known as harmful algal bloom or “red tide”, are seen at night near Sam Mun Tsai beach in Hong Kong January 22, 2015. (Photo by Tyrone Siu/Reuters)

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This Thursday, January 22, 2015 photo made with a long exposure shows the glow from a Noctiluca scintillans algal bloom along the seashore in Hong Kong. (Photo by Kin Cheung/AP Photo)

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