Giant clams' dynamic, vertical photosynthetic receptor columns may be Earth's most efficient solar energy systems

https://phys.org/news/2024-07-giant-clams-solar-energy-efficient.html

"photosymbiotic, with vertical cylinders of algae growing on their surface, absorbing sunlight after light scattering by iridocytes cell layer... light wraps uniformly around each vertical algae cylinder... 42% quantum efficiency... clams stretch themselves in reaction to changes in sunlight moves vertical columns farther apart, making them shorter and wider, increasing quantum efficiency to 67% (for leaves it is only about 14%)... solar panels that grow algae, or inexpensive plastic solar panels that are made out of a stretchy material"