Earth is the third planet from the Sun (more commonly known as "Sol"), it is one of the eight planets in our Solar System. In SpongeBob, Earth is the place that contains the Pacific Ocean, home to Bikini Bottom.
It is home to every human that has appeared on SpongeBob and every crossover character except Jorgen and the general fairies, the ghosts from Danny Phantom, Ultra Lord, the Thornberry family, Aang, Katara, Toph Bei Fong, Zuko, and possibly Manny Rivera.
Canada is the second-most focused country to be targeted for SpongeBob. It typically is the second country to have SpongeBob episodes aired.