The dream goddess of the cetaceans, Nukapai appears several times to Capt. Creideiki when he is under stress. She helps him overcome chronic insomnia at the start of the novel, echoing his Trinary poems about the Whale Dream and summons him to duty in Primal; she alone may speak to him in this ancient form of language. Nukapai also introduces him to the more powerful goddess Kph-kree, who undertakes to educate him properly and orders him to perform an undisclosed mission on Kithrup after all non-native species have left.