- last post: 01.01.0001 12:00 AM PDT
In response to Mast3r Chief:
I don't understand what you mean when you say "when they have been locked up by the Covenant for studying?" The Covenant accidentally unleashed them from their captivity aboard the Halo installation.
Secondly, how do you know that they need to eat to survive? There are many lifeforms that do not. They might just burn their own biological systems out in a desperate attempt to infect other lifeforms.
According to Cortana they "feed" on other sentient life forms which is further elaborated upon by 343 Guilty Spark who states that any creature with a certain level of intelligence is a possible host. This does support, though does not prove my theory.
If they did "eat", then "destroying their food" as Cortana put it, all sentient life in the galaxy would not stop them. Mere organic sustenance could be derived from any form of fauna or flora.