Not saying its fake, just that what I see surprises me: ice is only slightly lighter than fresh or sea water, so vaguely only 10% of ice mass is above surface l

Not saying its fake, just that what I see surprises me: ice is only slightly lighter than fresh or sea water, so vaguely only 10% of ice mass is above surface level; when it "flips" multiple times, it just seems like 50% of the ice is above water as if the other supporting 80% helping it float that high are totally missing...