Algae blooms in Geist Resevoir, Indiana. Photo by Peter McBride

Pink Coralline Algae seen at the Natural Bridges State Beach in Santa Cruz, California, June 25, 2017, during a negative 1'6" low tide.

Light illuminates this double pane glass installation with a thriving colonies of algae growing between the panes.

In "San Fernando" Reserve.

Marcona, Perú.

A fountain in a pond near some condos.

Congressman Bilbray's passion for renewable energy and the development of algae fuel is shared by James Kyson-Lee, one of the stars of NBC's "Heroes" television show.

On pathways etc., in damp places @ Court Orchard, Stoke Abbott, West Dorset, UK.

Colourlul mosses and algae growing on the wall of a cave at the roots of a birdcliff. Öræfi (Ingólfshöfði) Iceland, 9 June 2004.

葛仙米藻（地木耳、雨來菇、情人的眼淚）

gaillizette.com

near Cameron Lk.

This pic shows some of the blocking and how dirty the hull was when we pulled it out.

The Algaeus can achieve nearly 150 miles per gallon when used as a hybrid algae-electric vehicle. It was the first algae-electric vehicle to cross the United States, from San Diego to Washington, D.C.

Algae

There was a very small freshwater creek entering the ocean at this point.

The entire course of the creek's journey over the rocks to the sea was carpeted in this interesting algae.

Photographed at Salt Point State Park, Sonoma County, California

At Martine Nature Park, OKC