The purple globe has split from the freshwater raftballs. It began as an individual that was hollow and filled with hydrogen. It then floated up into the atmosphere and then started budding copies of itself until it was a hollow ball that stores vapor. It then multiplied and formed others, and thus began the purple globe species. The individuals are squares instead of spheres because it helps the entire colony stick together more easily. There are also interlocking appendages between the squares. The exposed surface area does not stick. It is able to take water from the atmosphere and use some of the vapor for hydrogen. It is basically just a tiny ball that floats around in the atmosphere and photosynthesizes, and does nothing else. Entire colonies in the atmosphere can form what would look like a purple cloud.