Benthic Azarketi
Source Pathfinder Lost Omens Absalom, City of Lost Omens
Your heritage traces to azarketis living deep beneath the sea, and you can handle the chilling depths more easily than most. You gain resistance to cold equal to half your level, and you don't treat environmental cold as one degree more severe when you are wet. You adapt to pressure changes from being deep underwater automatically without ill effect.
Ancestry Feats
Click here for a list of all Benthic Azarketi ancestry feats