The danger of red tide

Red tide refers to the phenomenon of algae blooming simultaneously, causing harm to living organisms, including corals, seaweed, animals and humans.

When red tide occurs, seawater often turns red or other colors depending on the type of algae.

How dangerous is the red tide?

According to the US Oceanic and Atmospheric Administration (NOAA), when single-celled algae live in saltwater and freshwater areas blooming, they can harm humans, marine species, mammals, and species. Birds live on fish . People have reported deaths because of algae blooms on people, although rare.

Red tide occurs in Australia.This phenomenon is becoming more and more popular all over the world.(Photo: ABC News).

The creatures that die from red tide are very dangerous to human health and cannot make food. In addition, the atmosphere around the algae blooms area is also very difficult to breathe.

In recent years, scientists have continuously recorded reports of algal blooms around the world. In the US, this is a phenomenon that attracts national interest because they not only affect human health but also destroy the marine ecosystem and directly affect the local and regional economies. .

If the phenomenon of blooms of algae blooms occurs between areas of aquaculture and seafood, it will cause the phenomenon of mass death. Some algae produce extremely strong toxins, which can kill fish or crustaceans, mammals and birds or cause illness in humans.

In the case of non-toxic algae blooms and dies, the decomposition process drains oxygen in the seawater, causing a series of animal deaths.

In addition, the accumulation of large amounts of algae in the respiratory process forms mucous membranes on fish gills, affecting the absorption of oxygen in the water. Scientists discovered damage on the gills of dead fish due to the phenomenon of red tide in the world.

Algae blooms can adversely affect marine ecosystems.(Photo: Getty).

In fact, seaweed is an important link in the ocean food chain. Most of the seaweed blooms are beneficial. They provide a large amount of abundant food that nourishes other animals. However, when the balance of nature is broken, in particular, the amount of algae proliferating, will cause negative impacts on the ecosystem.

Human responsibility?

In many cases, red tide appears entirely due to natural causes, including seasonal rainfall in coastal areas, the movement of certain ocean currents. However, scientists believe that red tide occurs frequently and widely in part due to human impact.

Wastewater from cities, residential areas and agricultural farms carries large amounts of organic matter flowing into rivers and seas. The process of raising fish and other creatures on the sea also creates a similar phenomenon. This is a rich source of food for algae, helping them to thrive and thrive.

Human activities facilitate algae growth.(Photo: Getty).

Thanks to the organic matter that human activities emit, marine algae wear and grow. They often appear near the shore, where human waste is directly dumped. Global warming and El Nino are constantly peaking, making sea water hotter, creating favorable conditions for algae to grow and bloom.

El Nino has existed for the last 5,000 years and has an impact all over the world, but this phenomenon is becoming more and more dangerous. Scientists have hypothesized for an increase in the impact of El Nino but climate change is considered the main cause. Human activities are causing climate change.

In order to respond immediately to red tide, scientists are mapping the exact prediction of the occurrence of algal blooms. This measure helps people have the best response plan and minimize its impact on the environment. In the long run, changing people's perceptions to prevent climate change is key to the problem.