"well there goes the credibility of your link poser.
The ice is already in the Ocean. It melting would have ZERO effect on water levels as it is already in the water. Any moron knows this. In fact, it may reduce sea levels as ice is less dense than water.
Yes, and as any moron knows the ice covering the ocean is not the only ice to be found in the arctic.
Yes and any moron can see that is NOT what that quote is referrign to. Thanks for coming out though."
Well, besides the friendly tone of communication exchange here, I also noticed something else. Yes, if ice is resting on water, and it melts, there is no net increase in the volume of water. The volume the ice displaces is replaced by the melted water.
Sea level won't reduce however, as, even though ice is less dense than water, it also protrudes from the water, making up for the difference.
However, and this is why global warming and sea ice melting matter, WARMER WATER TAKES UP MORE SPACE THAN COLD (non frozen) water. The warmer the water, the more space it takes. Water is most dense at 4.0 degrees centigrade. As it heats up, it becomes less dense (expands). So, sea levels will rise when ice melts due to the water expanding as it gets warmer.