Diatoms viewed under magnification.

Algae cells with concentric patterns

Diatoms centered in a frame.

Freshwater algae forms

Microscopic photos of algae cells.

Diatoms in centric shape.

Seaweed or algae strands.

Diatoms are centered in frame.

Microscopic diatom algae cells.

Microscopic diatoms in a cluster.

Microscopic aquatic plant cells.

A glowing needle among many others.