According to a new study by the National Oceanic and Atmospheric Administration, Oregon State University, and the UK’s Plymouth Marine Laboratory (PML), the World’s sea acidity reaches critical levels. Known as the “evil twin” of the climate catastrophe, this phenomenon happens when oceans absorb too much carbon dioxide (CO₂), lowering saltwater’s pH and endangering marine organisms. With acidification already affecting coral reefs, marine life, and coastal economies, the study cautions that we are “running out of time” to save critical ocean environments.

Ocean Acidification Breaches Planetary Boundary

According to the report, ocean acidification became the sixth of nine global systems to surpass its planetary boundary, having done so around 2020. Crossing planetary boundaries increases the risk of systemic collapse by providing safe bounds for natural systems to maintain a healthy planet. By 2020, global ocean conditions were either at or beyond the threshold, which is defined as a 20% decrease in calcium carbonate content below preindustrial levels, according to research using ice core data, computer models, and marine life studies spanning 150 years. Deeper ecosystems are at risk since 60% of the world’s oceans exceed the acceptable limit of 200 meters. Prof. Helen Findlay of PML emphasised the gravity of deep-sea coral reefs and biodiversity by saying, “The deeper in the ocean we looked, the worse the findings were.”

Acidification damages calcifying organisms, such as sea butterflies, corals, and oysters, which find it challenging to develop protective shells when pH levels fall. The study highlights that while focused conservation can benefit vulnerable places, lowering CO₂ emissions is the only worldwide option. PML’s Prof. Steve Widdicombe, co-chair of the Global Ocean Acidification Observing Network, said, “Ocean acidification is a ticking time bomb for marine ecosystems and coastal economies—it’s not just an environmental crisis.”

Also Read: Trump Administration Approved Coal Mine Expansion To Boost Exports To Asia

Urgent Action Needed to Mitigate Impacts

The world’s sea acidity reaches critical levels, and ocean acidification has significant ramifications, especially for undersea habitats that act as nurseries for numerous species, such as tropical and deep-sea coral reefs. These environments deteriorate as pH levels drop, endangering biodiversity and the means of subsistence for coastal communities that rely on marine resources. “We are facing an existential threat while grappling with the harsh reality that much suitable habitat for key species has already been lost,” said Jessie Turner, director of the International Alliance to Combat Ocean Acidification. She emphasised that as delays worsen the situation, countries must prioritise acidification on their policy agendas.

Deeper seas, home to various marine species, are most impacted, according to the study, emphasising the need for immediate worldwide action. Although lowering CO₂ emissions is still the best, local conservation initiatives can lessen the effects on the most vulnerable species and areas. The report is a sobering reminder that our actions now will determine the fate of our oceans and the ecosystems they sustain as the globe struggles with this growing threat.

Also Read: UK’s Prince William Calls For Urgent Action To Protect Oceans