u/pelmen10101

Sometimes Peritricha ciliates can choose completely unexpected places to settle. Pay attention to the ciliates from the genus Vorticella, for some reason they decided that the shell of a snail is a very cool place for them to cling to. These ciliates do not parasitize the snail, but use it as a convenient attachment. The snail is moving, there is less chance that you will be found and eaten. The only disadvantage for the snail is that such a number of ciliates can slightly reduce the speed of its movement and even interfere with it.

Binocular microscope with small magnifications, 2x lens, 10x eyepiece, 1x and 2x of smartphone, reflected light.

The video shows a rotifer from the genus Testudinella.

Achromatic objective 10x and 20x, camera ~18x

Achromatic 20x objective

I haven't used a microscope for quite a while, but recently it became possible to take a sample from a local stream. It was just a small stick with a bunch of filamentous algae on it. I decided that this is a promising place for different kinds of protists.

But when I looked at a few dozen drops, I was disappointed....and when my friends asked me, what did you manage to catch? I replied - nothing interesting.
Nothing interesting - looks like this.

Nothing interesting? :)

Achromatic 10x and 20x objective. Camera ~18x, video cropped. A bit of software zoom. The video is sped up in places