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Yes I'm sure you're right. I saw severl more in the sample after this and they were pretty clearly Dero worms.

Thanks. This was just a test. I think there are some interactions and behaviors that this will really help to visualize, for example the twisting retraction of a Vorticella, or seemingly random movements of Lacrymaria. I'm looking forward to playing around with this.

Thanks. I often add music when I publish a video longer than 1 or 1-1/2 minutes, this one I didn't.

If it wasn't for the motion of the cilia, I'd say it looks like the back end of certain dero worms. Oh well, mysteries are good!

Thanks. I didn't do anything special. Some of the duckweed leaves I find are thinner, some thicker. I am using a very stong light (100W halogen), I'm sure that helps. I look for thinner areas when shooting this type of video.

Thanks. Happy you're taking a look yourself -- it's incredibly rewarding.

They move using flagella. Each cell (round) has its own flagellum. This way, colonies can more successfully move through the water column to illuminated places than alone.

@@user-sk1ko8kt2v This is absolutely correct with respect to its natural movement. However, the second half (zoomed in view) of the video uses my 40x oil immersion lens. When I apply pressure to the lens while trying to focus deeper into the slide, this can cause movement of the water due to the downward pressure on the cover slip. While I did my best in this video to select clips with minimal change of pressure, some of the movement might be attributable to that.

​@@ThaiMicrocosmosI didn't notice this in the video, I thought it meant the normal movement of the seaweed. It often happens that the sample is not thin enough to allow the entire object to be viewed using oil immersion objectives. It often happens to me that I want to look at an object on a 90 lens, but a small grain of sand gets into the sample, which prevents me from focusing on the object normally due to the small focal length of the lens. And this is a problem, because the sample literally should not contain anything solid higher than about 0,5 mm. It should be very small. And in order to examine a large rotifer (about 0.7 mm in length) at 900x or more, you have to crush it with a cover glass or reduce the water very carefully so as not to crush such large organisms.

All great points. However I routinely violate most of those rules when shooting with my 40x oil :-) overall some of my best footage comes from that objective, I do my best to optimize the environment when using it. ​@@user-sk1ko8kt2v

@@ThaiMicrocosmos Huh I guess I always thought that plants wouldn't have the ability to move like animal cells. Interesting stuff.

Thanks :-)

Thanks 🙂

OK

Most of my videos have no music. But I have to have some fun too, and I enjoy making these every once in a while 🙂

This is conjugation - a method of sexual reproduction by microorganisms. The two have attached at their oral opening, and while connected they exchange genetic material. When they separate, both organisms are considered "new" organisms that contain genetic material from both parents.

These are Testate Amoebae. They live inside tests for protection. They're different from Foraminifera as they don't send their cytoplasm out in long streams to move and feed, they behave like normal naked amoebae.

I'm surprised nobody referenced Gilligan's Island - Polonius singing to Los Toreadors

I'm lucky to have such beauty in my water sample!

Thanks very much!

Thanks! Always trying to improve.

Yeah, you'll definitely have trouble getting images you would want as a photographer using poor equipment. I'm using a pretty ancient scope, an inverted Nikon circa 1985 that was gifted to me by a friend who operates a university lab after that scope was decommissioned. It's an absolute solid workhorse. That said, it has limitations. My background was in photography and astrophotography (as a hobbyist in both), so I did have experience knowing what I was trying to achieve. But I had no experience with microscopes. Take a look at my web page discussing my setup, and let me know if you have any questions. Happy to help. www.thaimicrocosmos.com/about/

Thanks 🙂