Oceans lose oxygen and have 700 'dead zones'

Research from the International Union for Conservation of Nature is presented at COP-25 in Madrid

The scientific organization International Union for Conservation of Nature has concluded that the loss of oxygen in the oceans has reached unprecedented levels and that at least 700 areas have been classified as “dead zones”. The conclusion of this research was presented this Saturday, 7, at the United Nations Conference on Climate Change ( COP-25 ) in Madrid.

In the 1960s, researchers recorded the presence of 45 dead zones, a 400% increase in half a century. Oceans are expected to lose 3-4% of their storage requirements by the end of the century.

According to The Guardian , the executive director of the International Union for Conservation of Nature (IUCN), Grethel Aguilar, argued that the issue was among the priorities in the COP-25 discussions. The situation poses risks to all marine species, particularly large ones, and already interferes with fishing and the survival of coastal communities.

“As warmed oceans lose oxygen, the delicate balance of marine life collapses,” said Aguilar.

The Intergovernmental Panel on Climate Change (IPCC) has also warned that the oceans are 26% more acidic due to the absorption of larger amounts of carbon dioxide, and subject to pollutants - especially plastic waste - and exploitation. fishing above recommended.