India, July 8 -- The World Meteorological Organization (WMO) has warned that the South-West Pacific experienced its second-warmest year on record in 2025. Rising sea levels, worsening ocean acidification and increasingly intense marine heatwaves are placing coastal communities, island nations, marine ecosystems and regional economies under growing climate pressure. Key Highlights South-West Pacific recorded its second-warmest year in 2025. Ocean acidification reached record levels across most of the region. Sea levels have risen by an average of 3.7 mm annually since 1999. Marine heatwaves and extreme weather are increasing climate-related risks. The World Meteorological Organization (WMO) has raised fresh concerns over the accelerating ...