Cerulean was shown in the prologue with Octopus and Turtle, his hatchmates, when Gill came looking for help finding Snapper. He was also at the Talons of Power ceremony to be tested alongside with his two of his brothers, Turtle and Octopus.
Turtle often thinks of them throughout the book, and how much he missed them during his "exile", in which all of his brothers ignored him. Him and Octopus used to tease Turtle about being slow, causing Turtle to make an animus-touched object to make himself faster. He also was recalled by Turtle to have gone to a ball with Octopus and him when they all turned one year old.
|Commander Shark||Queen Coral||King Gill|
|Princess Moray||Prince Fin||Prince Cerulean||Prince Turtle||Prince Octopus||28 Unnamed Sons|
|Princess Tsunami||Princess Anemone||Princess Auklet|
- Cerulean is a deep sky-blue color.
- Prince Cerulean is the second SeaWing to be named after a shade of blue (after Indigo).
- He is the fourth known and named son of Queen Coral.
|Queens|| Present: Queen Coral|
|Anemone • Auklet • Cerulean • Fin • Gill • Moray • Octopus • Orca • Shark • Tsunami • Turtle|
|Albatross • Clearpool • Cowrie • Current • Eel • Fathom • Humpback • Manta • Reef • Ripple • Sapphire • Scallop • Splash|
|Jade Mountain||Tsunami • Turtle • Anemone • Pike • Barracuda • Snail|
|Other Dragons|| Present: Abalone • Flounder • Herring • Herring's Brother • Kelp • Lagoon • Nautilus • Pearl • Piranha • Riptide • Snapper • Squid • Tempest • Tortoise • Urchin • Webs • Whirlpool|
|Kingdom||Bay of a Thousand Scales • Deep Palace of the Sea • Island Palace • Summer Palace • The SeaWing Royal Hatchery|
|Society||Aquatic • SeaWing Council • SeaWing Royal Family • Talons of Power Ceremony • The Royal SeaWing Massacre|