Gliding Filament Showing Fragmentation

Hello Everyone,

This time I’ve observed this filamentous form which appeared to gliding just like the cyanobacteria we observed in Manu Sir’s post a few days ago. I could see it moving back and forth but not rotating. I haven’t been able to recognize what organism this is. Please help me identify it, I’d love to know what it is.My guess is Ulothrix.

After a while it slowed down and appeared to undergo fragmentation. It happened very quickly and I was lucky enough to be able to capture it because I missed the first division where the entire fragment divided in two.

The water sample has been collected from Prabhadevi Beach in Mumbai and both the videos are real time.

~Have Fun Foldscoping

Mitali Patil.

(First Year Undergraduate from Ramnarain Ruia College, Mumbai ,India.)


2 Comments Add yours

  1. Manu Prakash says:

    Dear @Mitali,

    That’s absolutely fantastic – what a phenomenal moment to actually catch fragmentation. The filaments are indeed gliding. It’s so interesting since in some collected samples today – I watched a similar filamentaous algae. I had never imaged fragmentation – that’s a beautiful observation. This has to be a regular process for them to divide into shorter fragments. Your guess is a close one; I will see if any algae biologist might weigh in on the ID.

    Would you happen to have a picture of spot you collected it from? I am curious.

    Keep exploring. You have a wonderful imaging technique. One suggestion for improving your illumination uniformity (it’s already very good – but it is good to strive for perfection) is to read carefully this diffuser illumination trick:

    You don’t have to use a scotch tape – just a small piece of paper taped as a diffuser in front of the LED instead of using the condenser lens might be a valuable strategy to test. Always do a control experiment to compare and see if it improves resolution.


  2. Mitali says:

    @Manu Sir,
    I tried out the trick with paper – used it as a diffuser. It worked great and gave me much better illumination. Thankyou so much for the help 🙂
    Watching fragmentation really was a moment of joy. My heart was racing as I observed it.
    I will add the picture of the location asap.

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