2018 Small World in Motion Competition

Nitella sp. (green algae), cytoplasmic streaming

Charles B. Krebs

Affiliation
Charles Krebs Photography
Issaquah, Washington, USA
Technique
Brightfield, Differential Interference Contrast
Magnification
5x, 10x, 40x (objective lens magnification)

Nitella is a green algae with very large cells within which active fluid motion can be observed. This flow helps with the movement of nutrients, organelles and genetic material. It was first described in 1774. The causes for this motion are complex, and while much has been learned, the phenomenon is still not fully understood.

Stephanoceros fimbriatus (rotifer) feeding

Thomas E. Jones

Affiliation
Explore Microscopy
Crestline, California, USA
Technique
Differential Interference Contrast
Magnification
10x, 20x (objective lens magnification)

Polyps of a reef-building staghorn coral (coral tissue is green, the algae inside it orange)

Dr. Philippe P. Laissue

Affiliation
University of Essex
School of Biological Sciences
Colchester, Essex, United Kingdom
Technique
Differential Interference Contrast, Autofluorescence, Focus Stacking
Magnification
4x (objective lens magnification)