The other people have already answered this, but I just wanted to clarify that this is why people talk about the Greenland and Antarctic ice sheets in this cont

The other people have already answered this, but I just wanted to clarify that this is why people talk about the Greenland and Antarctic ice sheets in this context, because those rest on land. The Arctic ice is important for albedo reasons, it reflects a lot of sunlight that would otherwise go into warming the water, but as you correctly point out, the melting of that particular ice won't contribute to sea level rise directly.