Help identify this worm

Part 1:
 I just stumbled upon a strange “two colored worm” in algae mats on a rocky shore in Gulf of Mexico. It was a very agile worm; and I got some great videos on my Foldscope. I know the number of marine worm species is astronomical; but this is a really strange body. I don’t see a clear gut or mouth? Also the color transition from blue to brown is really sharp. 

I really would love to know what species this is. Anyone has any suggestions. I was thinking of the “palolo worms” but they are far bigger. woth your suggestions – please leave comments below. 

It’s one strange creature.. 

Cheers 

Manu 

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Fig1. Collage of foldscope (140x) images taken on an iPhone 6. 

Part 2: Here is the video of the live worm (most likely a nematode); I have multiple hints from several people which I am looking into. The background sound of the ocean makes for a dramatic affect; since this was imaged in a tide pool on a rocky shore.

3 Comments Add yours

  1. laksiyer says:

    @Manu quoting my local expert, whom you know well “Likely an Enoplean nematode could have symbiotic bacteria”. Can’t wait to see some videos of it.

  2. Manu Prakash says:

    @laks/Anand: I just added the video. I would love to follow up on the symbiotic theory. I did find it in a blue algae mat (which I am also perplexed about). I will write a longer post soon with the environment; and after skimming through some identification guides; write down some observations I made.

    http://www.biodiversityjournal.com/pdf/3(1)_13-40.pdf

    Enjoy the video in the mean time.

    cheers
    manu

  3. Manu Prakash says:

    @laks/Anand: Thinking more about symbiotic bacteria; I noticed several other species including a copepod and several mite look alike also hosting a blue color. Add another algae to the same with a striking blue color; all in the exact same spot/environment. Will share all the “blues” together..

    cheers
    manu

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