The jet-glider plent split from the hang-glider plent. It's even bigger to capture more sunlight and to catch more air to keep in. Adults never come down to the surface anymore. However, they may fly low to get a low floating cluster of sky trees. From the sky balloons and sky trees, it will get all minerals and the water needed for photosynthesis. The legs have long since degenerated, since it never touches the ground. Instead, it will follow the sun by flying to the sunlit half of Sagan. So, it will never sleep. It will just have breaks, where it rests in the air while gliding. Their young start as a normal flying plent, like other members of the genus Aeroflora.
Some differences from its ancestor are that, since its food contains hydrogen, it will absorb this and store it in hydrogen sacs. This not only helps it stay buoyant in the air, but allows it to give it a jet of air which it shoots out of its butt-nostril. This helps it maneuver in the sky to catch all the floating plants it can. These jets of hydrogen and other gases are only short bursts used when getting read to eat. This helps to ensure that the it grabs the plant before it floats away. This can also help if they fly to low and need to gain altitude again. You might also notice that their stomach has grown a bit to collect as many floating plants as it can before closing its huge mouth. The eyes have gotten a little better to search for its floating food.