Tenchais' Grovebacks are a large species of Groveback native to Jhoutai and used in terraformation of new worlds. The have wide, oblong bodies, and their back is a constantly re-cycling hide in which grows many molds and small species.
Valdutani cultivate the Grovebacks to grow rare mountain plants on their back, and will release them on long lines into the air to capture the sun and other elements they need to grow the plants.
In their old age, the grovebacks become landbound, and eventually take root to enter the last stage of their life, where they germinate fresh grovebacks.
Watching a shoal of grovebacks pass overhead is quite a sight, if you can find a telescope to watch them by. They are graceful, manta-shaped creatures with wings with feathers like that of a peacock. Their wings undulate as they fly, shaking loose the fungal spores which are mature enough to disseminate to the ground below.