Haha I had to lookup what eggbeater means and based on some YouTube videos it's crazy how much some people have to move to stay afloat. The body densities must vary a lot more than I thought.

Eggbeater in water polo is usually used to rise out of the water. Taking shots on goal is much more effective with your upper body out of the water.

Most people can float on their back without much effort.

people are different densities ;)