Deep Blue is a superhero in the DC Universe.
The character, created by Peter David and Jim Calafiore, first appeared in Aquaman (vol. 3) #23 (August 1996).
Within the context of the stories, Debbie Perkins is the daughter of Tsunami and grew up believing Neptune Perkins to be her father, while Rhombus believed her to be his daughter. As Deep Blue, she is among the heroes who respond to Aquaman's call to unite the undersea kingdoms. Over time, she begins to insist on being called Indigo and learns that Atlan claims to be her true father.