Hippo-grobly

Hippo-grobly is a planet home of the zorbians. It is full of cities, these cities cover 30% of the land, the rest of the land is mainly forests, jungles, or rainforests. Hippo-grobly has a population of 509 million, and it is home to a ton of hipposime. Hippo-grobly is in the Hippo system.