Growing consensus that our planet is likely to exceed the 1.5℃ warming limit. Research it even suggests that global warming will temporarily exceed the 2℃ limit if atmospheric carbon dioxide (CO₂) peaks at levels that exceed expected levels.  Exceeding our emissions targets is known as climate change This can lead to changes that cannot be reversed during our lifetime. These changes include rising sea levels, less functioning ecosystems, higher risk of species extinction, and loss of glaciers and permafrost. Many of these changes are already being seen. Our newly published research examines the consequences of climate overshoot for the oceans. Across all climate overshoot experiments and across all models, our analysis found that the associated changes in water temperature and oxygen levels will reduce viable ocean habitats. The decline has been observed for centuries. This means that humanity will continue to feel its impacts long after atmospheric CO₂ levels peak and decline. ( Tilo Ziehn, CSIRO, Andrew Lenton, CSIRO, Yeray Santana-Falcón)