Third Round of Video

Water Column – download or stream

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21 Responses to Third Round of Video

  1. Emma S. says:

    Why do you freeze the filters from the Mclain pump and not heat them to see the microbes?

  2. Mission Bay HS p3 class says:

    These videos are awesome! We need to see more Mr. Walters action in the videos please. The research is cool, keep digging…

    3rd period Marine Science Mission Bay HS

  3. Miguel Guan says:

    what are microbes? why are they important to this trip?

    • calechoes says:

      Microbes is a general term for a whole range of organisms that are microscopic. The researchers are primarily interested in bacteria, and small worms, protists, that live at the depths of the basin. The interesting aspect is that at the bottom of the basin there is little to no oxygen. Some organisms thrive in those conditions.

  4. Dylan Pachla says:

    Why does the freezer have to be -80 degrees?

    • calechoes says:

      The cold temperatures preserve the material until they can be analyzed in the lab, on the ship,or back on land.

      • calechoes says:

        A very cold freezer freezes things very quickly, keeping the size of the ice crystals that grow in the cells very small. Large ice crystals can cause a lot of damage to cells, making them very difficult to study later!

  5. Cassidy Broz says:

    Does the liquid nitrogen preserve the water samples better than just regular cold water?

  6. Mission Bay HS p4 class says:

    These videos have been totally awesome!

    We enjoyed seeing the core sampling in the last one and learning about charting your course. We are about to watch this one about the scientists and their interesting experiments. Stay safe, always wear a life jacket!

    Keep up the good work, 🙂
    P4 Marine Science Mission Bay HS

  7. Marina Honkala says:

    After being under water for four hours why do the filters have to be frozen for four hours?

  8. Olivia S. 1 Period CPE says:

    I think that it was cool to see all the diffrent organisms in the filters, but I think that you were right when you said that they weren’t happy! I hope that you enjoy being on the ocean!

  9. Freddie Assmus says:

    Does the Santa Barbera Basin have salt water or fresh water, and does the dna signature of organisms in water fade over time?

  10. Maggie Leibold says:

    How many water samples do you look at to find information about things in the ocean?

  11. Maggie Leibold says:

    How many water samples do you use to find all of this information?

  12. Lea Ulintz says:

    How much water will pass through the pumps during the whole entire cruise?

  13. Michaela Charlton (Midpark High School) says:

    Why do the fliters have to be under the water for four hours? Also why can the experiments not be preformed on the research vessel, but they have to be preformed on land? Finally, why is the water being tested when the currents change at the drop of a dime? Wouldn’t that mess up your experiments?

  14. alec lunney says:

    How do they know exactly how to use each of the tools correctly? Is it easy to learn?

  15. Khaila Pickering says:

    Did you find any differences in the lipids closer to the surface compared with the ones found at greater depths? Also, why do you use liquid nitrogen to store and preserve certain samples?

  16. alex harmuth says:

    i think its cool to see that all those organisms can be found with all the equipment

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