What Happens If the Polar Ice Melts?

When I did my iceberg experiment, nothing much happened. At first the ice stuck to the bottom of the bowl, so I could not efficiently fill it. When I dislodged the ice, it only slightly stuck out of the top, and it even moved soon after so that less was above the surface. I then filled the water to the very brim. After it had all melted, there was only surface tension, nothing seems to have went over the sides. So, although I contributed this to an ice cap example rather than an example of glacier melting, and although I believe my experiment to be an anomaly, so I want to repeat the experiment, I have to say that nothing much happened and I am wondering why. I was all prepared to see the water spill judging from the PBS show which I watched. So far it leads me to believe that nothing much happens if the polar ice melts. What was the results that you all had? Why did my bowl not overflow?