This is due to global warming
Specialists from the Southern University of Science and Technology in China found out that there has been an active bloom of algae in coastal areas for the past 20 years.
This is evidenced by the analysis of 760 thousand satellite images. Blooms intensify as the world’s oceans warm, scientists say. This uncontrolled growth has become a serious environmental problem, as some types of algae are toxic.
It is possible that in the future they will cause outbreaks of poisoning among animals and people. In addition, the withering of algae can lead to the depletion of oxygen in the water and the formation of so-called “dead zones”, and subsequently to the mass death of fish.
From 2003 to 2020, the frequency of algal blooms increased by 59.2% and its size by 13.2%.
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This study is the first attempt by scientists to create a system for detecting and monitoring algal blooms on a global scale and at high resolution. It is also a step towards understanding how ocean currents, the nutrients they carry, and the animals that feed on those nutrients change as the water warms.