UN Warns of Deepening Ocean Crisis

The United Nations' third World Ocean Assessment (WOA) warns of a 'deepening crisis' in the world's oceans, citing rapid warming, rising sea levels, shrinking ice cover, and severe strain on marine ecosystems due to climate change, pollution, overfishing, and biodiversity loss. The report, compiled by 600 international scientists over five years, covers the period from 2018-2023, noting that 16% of the total increase in ocean heat content since 1955 occurred in this recent period. Sea levels are rising at an accelerating rate, more than doubling to 4.3mm per year in 2023. The Arctic Ocean could become ice-free in September by mid-century, potentially as early as the 2030s, which is reshaping geopolitics and opening new shipping routes, increasing competition among powers like the United States, Russia, and China. Coral reefs are severely threatened, with 90% at risk if warming exceeds 1.5C. The report also highlights the massive influx of plastic waste into oceans and growing concerns about deep-sea mining. UN Secretary-General António Guterres called for a new relationship with the ocean. Separately, Donald Trump's administration is set to remove deep-sea scientific instruments, raising concerns about gaps in ocean monitoring.