Habitat and society
Siyokoys interactions with others vary on their native depth. Shallow-water siyokoys socialize more with nearby races, including surface-dwellers, while deep-water siyokoys are more morose, or even aggressive. Members of surface races sometimes pay siyokoys for help finding shipwrecks and underwater ruins.3
Siyokoys live in the Embaral, Obari, and Okaiyo oceans, and the Ivory, Songil, and Valashmai seas.3 A band of siyokoys lives in the ruins of Sangoshi off the coast of Minkai where they regularly attack trading vessels of the nearby city of Hiyosai.4
For additional as-yet unincorporated sources about this subject, see the Meta page.