diatoms, algae under microscopic view, phytoplankton, fossils, silica, golden yellow algae

agriculture alga algae biological biology cell chloroplast colony deep diatom diatomaceous diatomite diatoms earth eco element environmental fauna formation friendly geology geoscience heterokonta macro marine microbe microbiology microscope microscopic microscopy mineral minimal natural nature nucleus ocean organic organism phytoplankton plankton powder protist rock science scientific sea sedimentary silica siliceous stramenopiles unicellular water white zoology