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Jumping from particles

An organism is twitching in a narrow space between particles. After a while it begins to contract and expand its body, hides itself behind the particles, then suddenly jumps out and shoots out of our view. The organism is gone in an instant so it is difficult to determine if it is a ciliate.

Commentary by Prof. Yuji Tsukii, Hosei University
As described in the video commentary, this is may be a ciliate, but it is difficult to know for sure.

Sampling Date : 08 August 2009

Sampling Site : Hirose River A  Google Map

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