Our Oceans Are Suffocating – GreenHouse Gases Deprive Oceans Of Oxygen·
Marine biologists will tell you that fish species such as tuna and swordfish, known as the deep-water divers of the ocean for hunting at depths of 200 metres, are today repeatedly coming to surface view.
The reason for the behavioural quirk is that warming sea temperatures have zapped oxygen out of waters even far out to sea, making it difficult for the predators to breathe—let alone hunt—in deep water. As the planet’s atmosphere traps more heat, so the oceans get warmer.
“If you think ocean warming, think rising sea levels, deaths of coral reefs, and the ocean acidifying,” Peter Thomson, the UN Special Envoy for the Ocean, told UN Environment.
“This will make it harder for ocean-based lifeforms like shellfish to survive in the ocean.”
In dialogues about ocean issues, the effects of greenhouse gases, such as ground-level ozone and carbon dioxide, haven’t received nearly as much attention as plastic, largely because they aren’t visible. But oxygen is as essential for the ocean as it is on land.
Photo: Peter Feghali/Unsplash
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