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Differential interference contrast image of a rotifer (Floscularia ringens) feeding. Its rapidly beating cilia (hair-like structures) bring water that contains food to the rotifer. When their cilia beat, the "wheel animacules" first described by Leeuwenhoek (ca.1702) look like two wheels spinning on top. They live in reddish-brown tubes made of spherical "bricks." This image won First Prize, 2011 Olympus BioScapes Digital Imaging Competition®.

Technical Details

Biological Sources

NCBI Organism Classification
Floscularia ringens
Cellular Component
motile cilium
cell surface

Biological Context

Biological Process
feeding behavior


Charles Krebs
2011 Olympus BioScapes Digital Imaging Competition®
2011 Olympus BioScapes Digital Imagin...
Issaquah, WA, USA

Sample Preparation

Relation To Intact Cell
whole mounted tissue


Spatial Axis Image Size Pixel Size
X 2822px ——
Y 1963px ——
*CIL – Cell Image Library accession number. Please use this to reference an image.