In Dune by Frank Herbert, Sietch Tabr has a cave that contains a little-maker or stunted worm. This worm is surrounded by water so that it cannot escape. Paul decides to try and change the water of life, and heads down to where the little maker lays to drown it and convert the water.
The worm being stunted may be a product of human interaction or through necessity:
- A larger worm may be to hard to handle or need to much water to poison.
- The stunted worm may have been stunted by being surrounded by water through its life.
Is there any finite explanation for why only little makers are used to create the water of life that is needed to become a Reverend Mother on Arrakis?