Why does the waves send “blue light”? Hidden crisis behind beauty


This article integrated from “Knowledge is Power” magazine

In many documentary, we can see the fluorescent of the stars deep in the sea, many of which are sent out by jellyfish. In recent years, in some regions, even near the beach, we can sometimes see the light of the film appear in the rolled waves at night. So where do these mysterious light come from?

The waves glow due to whip and algae

At first, people mistakenly thought that these mysterious flashes were reflected by the sea surface, and the light source may be the light or moonlight reflected by atmosphere. However, later people discovered that the more dark nights, the brighter the fluorescence near the waves near the beach. This fully shows that the mysterious fluorescence does not come from the air, but that there are luminous objects in the seawater. These luminous substances cannot be artificial objects, and can only be some marine creatures.

Are they jellyfish? no. Because the jellyfish does not have the habit of clustering on the sea, it is impossible to cluster on the sea near the beach. Some biologists detected the seawater where the sea of ​​light was glowing, and discovered the truth of the waves of waves. turn out to be,

Those glossy waters are rich in floats that can emit blue fluorescent, which is called “whipped algae”.

In fact, many plankildren in the ocean can emit fluorescence, but most of them are not as densely gathered as they like to gather together. In the glowing waters of only a few thousand square meters, hundreds of millions of whipped algae can often gather.

Flippot algae is a floating creature between animals and plants

It is the collective name of the algae of the algae of the golden algae door, the nude molten algae door, the hidden algae door, the methaolic door, and the algae of the green algae group. Their common feature is that they can actively exercise because of whipped, unlike many seaweeds that can only be fixed somewhere or drifting with the waves.

The luminous mechanism of whip hair algae

Why can the whip hair algae emit a blue fluorescent? Woodland Hastel, a marine biologist at Harvard University in the United States, found that it was found in the experiment.

There is a unique blue fluorescent gene in the whip hair algae. This gene can control a special protein in the cell membrane and cause the cell membrane to open a channel that can generate current. After the current passes through this channel, the fluorescent protein that stimulates the whip coop is fluorescent. If the fluorescent gene is turned off by the method of gene engineering, the whip hair algae will no longer emit fluorescence.

The whip hair algae is very small, and the body is only 50 microns. A single whip hair algae in the seawater is invisible by the naked eye. The fluorescence emitted by a single whip hair algae is also very weak. The whipped algae is not always glowing. They are as shiny when they are disturbed by the outside world. Therefore, they often see the blue fluorescent of the flagella’s algae at night. The greater the waves, the stronger the fluorescence. On the contrary, such fluorescents are not seen on the calm sea.


For many weak creatures, hiding yourself is the best strategy. Instead, a weak creature like whip hair algae emits fluorescence at night. Are they not afraid of the predators to follow the light? Hasteins said that the reason for their luminescence is still a mystery. However, Hasteins speculated that the luminous whip and algae glowing was to warn predators. The glowing whip hair algae gathers together. When the predators stir up the waves, they will emit a bright light. Close easily. The footprints of Hastus are spread all over the Atlantic and Pacific, and biological light can be found almost every night. Among them, the waters of the Maldives are the most prominent. It can often be seen here, and the light waves are often larger than other sea areas.


Everbright waves are the signal of enhanced pollution

In recent years, the phenomenon of the sea surface has become more and more obvious. This is a very happy thing for tourists who like night tour at sea. However, for environmental protection experts, this is a very bad signal,

There is a crisis behind the beautiful fluorescent waves, and the large -scale reproduction of floats, including whip hair algae, is the main reason for the formation of red tide pollution.

When the red tide erupted, a large number of whip hair algae can produce toxins that endanger other animals. In addition, a large number of float algae such as whip hair and algae will consume a lot of oxygen, and the oxygen content of seawater decreases, causing other marine life to suffocate.

Rich tide pollution formed by floats such as whipped algae is not naturally formed, but caused by humans discharged too much fertilizer and organic pollutants to the ocean.

Researchers have found that the blue glowing area on the ocean is often close to the coast, because the more closer to the coast, the more rich nutrition pollutants from the mainland.


It is hoped that people can reduce the rich pollutants that are moving towards the ocean in the future, because we are more willing to have a long -lasting clean sea, rather than getting a short sense of satisfaction of watching the blue light waves.