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A Marine Nematode Roundworm

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Uploaded by on Aug 25, 2006

This wiggling critter is a Nematode. Nematodes are primative round worms composed of only a few hundred cells. Running down the center of the worm is its gut. It belongs to the group of Nematodes that eat bacteria. It lives in Heron's Head Park Salt Marsh, on San Francisco Bay.

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Uploader Comments (WLanier)

  • So the worm-like things I found in my hermit crabs' drinking water were nematodes.

  • Not sure. Identification by image is risky. ID by someone else's image is pointless [I actually did research with these nematodes].The critter I photographed is a bacteria-eating nematode. I can go no further in identification.

  • The microscope is a Swift FM-31 LWD Field Microscope and the camera a Nikon Coolpix 885. LWD = long working distance [objective lens]. An older Leitz 10x Periplan eyepiece is used because it has threads that fit a Nikon UR-E4 adapter, so the camera can be attached to the microscope eyepiece. The Coolpix has a digital display, so you can see exactly what is in focus under the microscope. The Coolpix 885 takes 30-sec videos [.mov].

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  • it's good to know that there aren't only stupid videos on internet

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  • First there is a Ascaris then comes a Paramecium caudatum passing by. What is the protozoan in the end? It is cool but quite freaky.

  • so intersesting i wish i could see it up close

  • I have a question. Today I was looking in my 10 gallon freshwater aquarium. I only use the tank for when I have fish too small to put in my 55 gallon, so I use it to hold them til they are bigger. I have a filter in the 10G that is good enough to filter an 80G tank. I was looking in the water and saw this tiny white worm that was swimming like a sperm cell with his head cut off lol. It was swiming with fast snake like movements (s shape movements). Do you know if this is a natural thing?

  • interesting find

  • Paramecium at 0:18.

  • how did u manage to take a video of that via a microscope?

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