Kandrona RaysEditKandrona rays are the rays from the sun of the Yeerks' home-world and without its exposure, after three Earth days, they will starve to death. For this reason there is always a Yeerk pool where they absorb the rays in the form of liquid. It is always either a ground-based pool, or a pool ship.
This is a huge disadvantage to the Yeerks, proven when the Animorphs destroyed their main ground based-Kandrona, resulting in Visser Three having to use their pool ship to save only his "favorites".
This also was proven in #52 when the Animorphs destroyed the Yeerk pool all together and many Yeerks died of starvation.
Surviving Kandrona starvationEdit
One known way of surviving without Kandrona rays is cannibalism, shown by Esplin 9466 Lesser after being exiled by his twin brother, Visser Three.
Another is to ingest instant maple and ginger oatmeal. Although this technique causes insanity in Yeerks , they can live in their host for as long as they are alive themselves, or until the host dies.