Remorasi:
When the remorasi of planet Krydon are young, they get a ball of energy that sustains them throughout their lives. With age, their branches and the energy source both shrivel up. As a result of the energy source depleting, the chlorophyll in their leaves slowly dies and yellow-producing xanthophylls start to take over.
Photons, Absorb!
Blast my chloroplasts!
The chlorophyll inside,
Will give me the energy I need,
To charge my stride.
As I age, I turn yellow and not green,
Then I slow down and decay, into the scene.