The affects of the extra heat are almost everywhere. As the ocean heats up, it expands, pushing up sea levels around the globe. Just over one-third of the rise in global sea levels is down to thermal expansion.

More heat means more marine heatwaves that have devastated marine ecosystems, causing bleaching on coral reefs and killing underwater plants that act like forests, providing habitats for marine life and acting as nurseries for fisheries.

Source: Oceans have been absorbing the world’s extra heat. But there’s a huge payback | Climate crisis | The Guardian