In Shum IngLeeYuTyayInReh, Immersion or Spiritual Immersion is part of the spiritual evolutionary process of a Shum meditatior. It names a process that happens when the meditatior becomes well accustomed or 'saturated' by the goal of a Shum meditation to the point that the next step becomes apparent to the Shum meditator or the his or her Shum guide.