What ice cubes float in water because they are less?

Ice floats in water because it is less dense than water. :)

yes, if it didn't there would be no life on earth at all because ice from the polar caps would sink and the whole ocean would be frozen

Ice floats in water because it is less dense than water. Liquid water is most dense at approximately 4oC. Water becomes less dense at any temperature below or above this value.

yes!

Ice is less DENSE than water. This seems odd, as we usually expect colder things to become more dense than their warmer counterparts. But the hydrogen bonding in water makes it expand just below...