There are explosive "blue tears" along the coast of Xiamen. How did the "blue tears" come into being?

There may be two types of "blue tears" along the coast of Xiamen, 1. They are marine microorganisms named "Blue Tears", which can only survive for about 10 seconds without seawater. The other is Nocturnal algae, a marine organism that can emit light and produce light blue fluorescence. In general, Nocturnal algae belong to a large number of algae, which are distributed all over the world. In China, noctiluca scintillans with this peculiar landscape are mostly distributed in warm southern coastal areas, such as Fujian, Taiwan Province and Shenzhen.

The number of "blue tears" along the coast of Xiamen this time is very large, reaching the fourth outbreak level, and the highest level is level 5.

Blue tears are microorganisms that live on the bottom of the sea. The scientific name is firefly, which is 3mm long and has no harm to the environment. They usually appear at high tide and when the south wind blows. If the waves are big enough, blue tears will fly in the air with the seawater, and the stars will twinkle from a distance, which is very touching. Seeing that the weather in Xiamen is easterly today, it is hard to say whether it is blue tears or luminous.

The investigation found that blue tears have high requirements on wind direction and temperature. In previous years, romantic blue tears only appeared at the seaside around April after March in Fujian, but in 2020, blue tears appeared at Pingtan seaside in Fujian, but such a large-scale outbreak was rarely seen.

Another possibility is that noctiluca scintillans appears in the seaside of Xiamen, which is the main algae species of marine red tide. If the nutrients in the ocean gather in the water, resulting in the eutrophication of the ocean, in layman's terms, when the seawater is not clean enough, polluted and the temperature becomes higher, the seawater will produce bacterial species and breed noctiluca. Therefore, although the coastline of Xiamen is beautiful and poetic, it is actually a bad phenomenon for the environment.

Noctiluca belongs to marine dinoflagellate. Although noctiluca scintillans is beautiful and produces luminescent substances through air oxidation, its harm to fisheries cannot be ignored. Once fish and shrimp eat noctiluca by mistake, it will produce poisoning reaction, which will seriously lead to a large number of fish and shrimp deaths. So noctiluca is beautiful, but it is a fatal temptation to marine life.

However, the number of blue tears in the first month of this year is very small. Marine experts have judged that the blue tear along the coast of Xiamen may be related to the rapid rise of temperature in Xiamen. As we all know, the growth of blue tears depends on temperature and tide. Blue tears are gathered by the waves and slowly pushed to the beach on the shore, producing faint blue light. Set off the coastline of Xiamen seaside, the stars shine.

Previously, on 20 16 and 20 17, blue tears appeared on the Xiyong coast of Nan 'ao Office in Dapeng New District, Shenzhen, stretching for dozens of kilometers. At that time, Shenzhen residents called it "stepping on the stars with their feet", just like the dream tree of life in the movie Avatar. When your feet gently step on the sea with noctiluca, you will grow fantastic branches of life.