The Deep Palace is the underwater palace of the royal family and several other important SeaWings. It was constructed around the royal hatchery and is supposedly much more magnificent than the Summer Palace. Not as much is known about it compared to the Summer Palace since almost all of the book The Lost Heir takes place in the Summer Palace . The Royal Hatchery was described to be the shape of an egg, and there is no eating allowed inside of it. Auklet's favorite place is a garden full of bubble jets.