|This location exists primarily or exclusively within the Post-Super Genesis Wave continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
The Great Blue Realm is a location that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is an area that encompasses the Northern Oceans on Sonic's World.
For an unknown time, Akhlut the Orca and his Northern Oceans Egg Army have menaced the Great Blue Realm, causing unsettlement amongst its residents. In the South Ocean, Meropis would experiencing trouble when the waters got polluted from the Egg Carrier after it crashed into the sea and Meropis' shields had trouble keeping the contaminated waters out.