Gravity transitions from Sphere-centered to Ocean-centered as one moves away from the Spheres. When a ship is capable of flying on gaseous mana, it is almost always the case that they are now subject to the Ocean's gravity. Sphere gravity has a definitive, finite range, which does not diminish in strength until one leaves its threshold distance (which varies depending on the size of the Sphere).

Air is a universal constant no matter where one goes. Wind approaches from all directions in the horizon, heading inward towards the central Sphere. The corridors created by Spheres causes varying currents that are not simple and predictable.

Spheres rotate in place; they do not move from that position.