All life is a waterdance. Most adults are 66% water. Embryos, where life begins, start out as about 95 % water. Water in its liquid form is absolutely essential to life - life is pretty inconceivable without it.

But water can take any form it wants. If we were 100% fluid, with just a skin, then it would be easy to assume any of the shapes of the yoga asanas. But of course if we were all water, we would look like a puddle at our own feet!