What is "diatoms"

Usage examples of "diatoms".

The way they tolt me, marine life fed on diatoms, which is these colonies of algae.

Yoke sent her control mesh out over the sullenly floating imipolex cube and turned it back into seawater, complete with an assortment of local diatoms and plankton.

The biologicals were all alla-made realware: primarily coral polyps and the diatoms they fed upon.