Note: All are dolphins except Father Clement, Sister Sterne, Squelch and Erishkigal
Father Clement – senior deity
Sister Sterne – junior deity
Ripple – female dolphin, problem spirit
Pearl – mother of Ripple – natural historian
Rigel – father of Ripple – leader of the senior astronomers
Echo – sister of Ripple (2 years older)
Rev – brother of Ripple (3 years older)
Aroha – sister of Ripple (6 years older) – mind adept
Breeze – Pearl’s birth support dolphin
Nimbus – health adept
Matangi – Aroha’s partner – weather adept
Cosmo – fighter/astronomer from the Southern School
Kismet – Cosmo’s father – Southern School weather adept
Mimosa – Cosmo’s mother – Southern School planetary forces adept
Alcyone – female mind adept in the Southern School
Maram – Southern School fighter – friend, guard, guide to young Cosmo
Zenith – teacher of home-based astronomy in the Southern School
Squelch – five-day octopus and family pet
Delph –teacher of practical and home-based astronomy
Axis – mathematics teacher
Tercet – poetry teacher
Flip – youngest member of the junior astronomy team
Quin – data co-ordinator of the junior astronomy team
Rush – leading athlete of the junior astronomy team
Givan – navigator and leader of the junior astronomy team
Hadar and Pollux – minders for the junior astronomy team
Rikoriko – daughter of Aroha and Matangi, niece of Ripple
Erishkigal Shadow Queen – the Blue-Tipped Shade and Nightmare of the Deep. Her eight tentacles are named Vipa, Venga, Malevine, Lucifina, Sadistine, Fera, Lashette and Clawdine