Orca's statue
Before she died trying to kill Queen Coral, Orca sculpted a statue that would smash all of the heirs to the Seawing throne. Before she died, Orca said that the queen should thank her and that no one would stand in her way of being queen.
History
The Statue has killed off most of the heirs after Orca. It was originally thought by most of the Kingdom of the Sea that an unknown culprit was killing off the heirs instead of the statue. Orca was the first heir to the throne, so there were little to no heirs after her. However, Anemone was an exception when Queen Coral decided to stay beside her egg for the entire year before she hatched. After her egg did hatch, Queen Coral had a harness made for her to be attached to the queen all of the time, thus making life for her daughter very unprivate and stressful.
Until Tsunami and the other dragonets visited the Kingdom of the Sea, all of the other heirs were also being killed. Right after Tsunami was attacked by the masked Whirlpool, who she didn't know had done it, she went to the queen and told her of the painful event. But instead of searching the Summer Palace of the Sea, she was deeply worried about whether or not the culprit was going to the Royal Hatchery to smash the only two eggs she had from the deceased Gill. One of the eggs was smashed and the dragonet inside had her head twisted. Shortly after the queen discovered this, she killed Tortoise. Tsunami suggests to protecting the egg herself. She discovers that the Statue is alive and destroys it before it can kill the last egg. The egg hatches safely and the baby dragonet is named Auklet.
During the fight Between Orca's Statue and Tsunami,The statue is refered to as Marble Orca