Coloured scanning electron micrograph of sperm cells that are developing inside a seminiferous tubule. The developing heads of the sperm cells are embedded in a layer of Sertoli cells (red) that nourish the developing sperm.
infinity-imagined: Coccolithophores are microscopic algae that first appeared 220 million years ago, and flourished during the cretaceous period. They constantly remove carbon from the atmosphere as they die and sink to the ocean floor, producing chalk.
Loasa Chilensis (a creeping flowering vine, native to Chili). Many wind dispersed seeds have a honeycomb pattern, which are referred to as balloon seeds, this Chilean native has an extreme honeycomb. To create a Image by Rob Kesseler.