What are diatoms?
Diatoms are aquatic microalgae.
Diatoms are aquatic microalgae. Each of the tens of thousands of extant diatom species assembles a silica-based frustule with a particular 3D shape and patterned, nanoscale features (e.g., pores, channels, protuberances) that are replicated with fidelity upon biological reproduction.
Sustained reproduction of a given diatom species can yield enormous numbers of daughter diatoms with frustules of similar (genetically controlled) morphology (e.g., 80 reproduction cycles would yield
Here is a picture of a diatom: