The Makara's come from the archaic image of the (LINK) "Lady and Her Beasts". In a way they represent Her masuline aspect. It is corresponding with Cosmic Realization in which the Light is born out of Darkness or Cosmic Womb (LINK). You may say they are the "Power of Emptiness". Experience it yourself through conscious breathing. The deeper you breath out, the more powerful your breathing in. When your breathing out disappears into the "bottomlessness" of your abdomen (pelvis) the breathing in is logarithmically swelling like a tsunami.