As multiple people have pointed out, sea ice does not itself appreciably cause sea level rise. It's like an ice cube floating in your drink -- it is already dis

As multiple people have pointed out, sea ice does not itself appreciably cause sea level rise. It's like an ice cube floating in your drink -- it is already displacing the water, so that when it melts your glass is not suddenly more full. (Hopefully this makes sense to you -- clearly a glass completely full of ice and water does not overflow when the ice melts). Ice on land _does_ cause sea level to rise, and there has been sea level rise over the last century. Also losing sea ice has other effects, like causing the ocean to heat more rapidly (ice has higher albedo than the ocean). So you would expect to see water temperatures rising, disproportionally in arctic and antarctic waters where there is lots of sea ice coverage being lost. In fact this is exactly what the data show.