The sample was observed immediately after being collected.
A large diatom is going in and out of soil aggregates. Small particles are moving inside of the diatom cell, and also a small unknown organism is moving behind it.
Commentary by Prof. Yuji Tsukii, Hosei University This diatom belongs to genus Surirella, probably Surirella robusta. It is often found in rivers.
The sample was observed immediately after being collected from a paddy field.
A diatom is traveling slowly through soil aggregates. Inside the cell, a lot of tiny particles are moving within the cytoplasm.
Commentary by Prof. Yuji Tsukii, Hosei University This organism is a diatom belonging to genus Surirella.
When diatoms glide, they usually show the top view, called the valve face. However, in this video, the cell shows the side view, called the girdle face. This organism is probably Surirella robusta or a related species.
