Sponsored photos by

Freshwater microalgae blooming under microscope. The species is probably Chlamydocapsa sp. Live cell. Selective focus
Rhodophyta seaweed or red algae branch isolated on white
Freshwater green microalgae, Gloeomonas sp. Selective focus image
green algae ulva lactuca with bubbles on white.

Free stock photosalgae (3)

Pointillism in nature: Green algae covering surface of creek, for texture or background, or concept of overpopulationImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/pointillism-nature-green-algae-covering-surface-110080109">Image used under license from Freestock.com</a>
Lichens growing on shady side of boulder in desert. Detail of Calico Hills in the Red Rock Canyon National Conservation Area near Las Vegas, NevadaImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/lichens-growing-shady-side-boulder-desert-30751300">Image used under license from Freestock.com</a>