Mineral Eater (Ex): Hecwa feed off minerals and thus can eat raw mineral, mineral rich dirt and other mineral rich food instead of eating normally or drinking water.
Mucus (Ex): The hecwas' skin is covered in greasy greenish mucus (in big quantity, otherwise invisible to the naked eye). Allowing them complex phenomenal communication. The mucus grant a few benefits:
Grant a +2 bonus to either intimidate or diplomacy (changeable as a swift action) AND a +2 bonus to sense motive checks. As long as there is skin contact between the subjects.
Allow non-verbal speech between creature touched (only creatures with the mucus special rule).
+2 appraise check made to identify touched mineral (raw iron, salt, or even the husk of a metal ship).
Natural Toughness: Hecwa are alway under the effect of endure element spell, they gain +6 to fort saves against environment hazards (sandstorms, acid rain, etc.).
Weak Ears: Hecwa take a -4 racial penalty to listen checks.