Changes

The power this caste holds over the Tau is such that an Ethereal could tell a Tau to die and that Tau would do so quickly and gladly. Though the obedience of the Tau to Ethereals is held as natural, other races, especially [[Mankind]], have long speculated about this uncommon loyalty. There are many theories, from prenatal indoctrination and pheromonal compulsion to the presence of some veiled psychic gift possessed by the Ethereals, but as yet no confirmed proof of any such power has been secured. Those few Ethereals that have been captured and subjected to interrogation have proven less than forthcoming.{{Fn|8}}

[[Image:TauXenology.jpg|thumb|left|200px|Tau Ethereal{{Fn|1}}]]

On their foreheads resides a small diamond-shaped organ with a rigid carapace that contains ultra-dense hormonal fluids which emits an overpowering scent. Comparative Imperial studies of members of other Tau castes show the ethereals have a comparatively smaller olfactory cavaties{{Fn|1}}.