Digital Sea

Digital Sea
First Appearance	William Returns
Monsters Seen	Sharks, Kongres, Kalamar

The Digital Sea is a liquid sea that resides below all of the four main sector and is how the Lyoko program portrays the supercomputer's DOS or DOS's quantum computer equivalent. Another theory is that it portrays the trash folder. Aelita uses this to her advantage by dropping monsters into the Void using her Creativity. When a monster goes into the Void, a beautiful white column of light emenates from it. It is the most forbidden place in Lyoko due to the deletion it causes.

The Digital Sea is Lyoko's portrayal of the Internet, as the Internet was needed to create Lyoko, Lyoko shows the Internet as an actual sea to signify that all life needs water. Though it's actual properties are quite the opposite. If someone falls into the Digital Sea, their data is swept away in the "digital tide" and would be next to imposible to collect all their data back to re-create them. In some instances, XANA used this to his advantage in Tidal Wave when he managed to flood Lyoko in order to protect his activated tower and to keep anyone else from entering Lyoko until the problem was fixed.

So far, there has been only one known incident of a person falling into the Digital Sea. Yumi fell into the Digital Void in Cruel Dilemma, but Jeremie was able to use the one-shot materialization program that Odd accidentally completed by dropping candy on Jeremie's keyboard to save Yumi and bring her back to Earth. It is unknown if Jeremie's current version of the materialization program would be capable of performing a similar rescue. Nevertheless, Team Lyoko continue to avoid falling into the Digital Sea at all costs.

According to Aelita in Maiden Voyage, the Digital Sea is a small part the The World Network.
There are various Hubs in the Digital Sea that Aelita can guide the Skidbladnir into to teleport to other Hubs once Jeremie has entered the coordinates for them. They are often used when the Lyoko Warriors need quick transportation to different places, usually X.A.N.A.'s replicas of Lyoko.