My guess is that air is too violent and diverse compared to something like ocean. A neutral buoyancy organism wouldn’t calmly float, it would be buffeted around by wind and smashed against ground. And there’s no “surface of the air” to anchor itself.
My guess is that air is too violent and diverse compared to something like ocean. A neutral buoyancy organism wouldn’t calmly float, it would be buffeted around by wind and smashed against ground. And there’s no “surface of the air” to anchor itself.