Unknown marine organism

Discussion in 'Photography' started by LikesFish, 8 Feb 2013.

  1. LikesFish

    LikesFish

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    Found another weird thing in my reef aquarium. It attaches to the live rock / coral and seems to be filter feeder. I did discover nematocysts on its tentacles so it seems to sting its prey. I also found diatoms in its stomach. They seem to be colonial as I have never found them alone.

    First a (close to) 1:1 macro shot of the organisms in their natural environment:
    [​IMG]


    Under the microscope under dark field illumination (4x) they look quite different:
    [​IMG]

    A single polyp with a 10x objective, dark field:
    [​IMG]

    41-image stack with 10x objective, 1.6x magnification, DIC
    [​IMG]

    Single image, 20x objective, DIC
    [​IMG]

    Finally, to show the contents of its gut, here is a photo under fluorescent excitation (UV/Blue), 40x objective. The red stripes are diatoms, not sure what the green blob is and also not sure why its oral disk fluoresces yellow.
    [​IMG]
     
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  3. RocketRooster

    RocketRooster

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    Hydra's salty cousin! Once removed (for pics), as it were.

    Great pics as usual. I've been playing around with the kids' toy microsope, no fancy optics or dark field etc, but I've also seen some strange things.

    Every hobbyist should have one. Special request: can you please take some shots of corralline? Thanks!
     
  4. MistaOrange

    MistaOrange

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    Amazing pics Waldo;). I always thought those were some sort of fan worm but seeing it now in your pics it looks more like some type of nennie or am I wrong?
     
  5. RocketRooster

    RocketRooster

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    It's definitely a hydrozoan.
     
  6. MistaOrange

    MistaOrange

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    But hydrozoan is a jelly isn't it?
     
  7. RocketRooster

    RocketRooster

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    Kirrekt - though Hydrozoa are a class of critters under the Cnidarians - it includes jellyfish, hydra and nennies.
     
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