Point of departure--56 million years ago, in which the Paleocene-Eocene Thermal Maximum lasted three to four times longer than it did in our timeline. Today, on this alternate Earth, the twilight zone of the tropical and temperate seas (200-1000 meters below the surface), a genus of trees has evolved to germinate in the dim light of the twilight zone. They grow in three different stages:
- An infancy in which they develop red leaves in which they can photosynthesize on blue light.
- Once they've grown tall enough, they shed their red leaves and grow dark green leaves to photosynthesize on the brighter but still dim sunlight.
- Upon maturity, they replace dark leaves with light leaves.
Each tree has the following parameters:
- An average height of 492 feet above the water surface
- An average diameter of 38 feet
- Canopy and prop roots supporting the tree at an average area of 3.5 square miles.
- A single prop root has an average width of 13 feet.
Could such a tree with such a lifestyle be feasible?