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Today's Update

Posted by on in Teachers
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      After each trawl the MOCNESS frame is reeled in and the nets are collected.  Scientists pulled in the nets by hand.  The nets stay on for the whole trip but at the bottom of each net there is a section called a cod end.  It is where the marine organisms collect.  This portion of the net is removable and after each trawl it is opened and poured into a collection jar with very cold sea water. The specimens are then stored in the refrigerator until the researchers are ready to look at a specific sample. It is very important for their data that they know what organisms came from what depths so we work on one net sample at a time.  Here are some pictures from yesterday’s trawl.

 b2ap3_thumbnail_Bringing-in-the-Nets.png

Bringing in the Nets

b2ap3_thumbnail_Nets-Coming-In2.png

Nets Coming In

b2ap3_thumbnail_Pulling-in-the-Nets.png

Pulling in the Nets

b2ap3_thumbnail_Emptying-the-Cod-Ends.png

Emptying the Cod Ends

 

     Typically at each location, we will do a day and a night collection.  Sometimes based on acoustic data the scientists will target a specific depth of water.  Early this morning they were going to do one of those targeted trawls.  However there were some complications with the net and they discovered there was a seam on one of the nets that had come undone.   So last night before it went back in the water that net had to be changed out.  Three extra nets were brought along on the trip in case of any net damage. 

b2ap3_thumbnail_Seam-Tear-on-Net.png

 Seam Tear on Net

b2ap3_thumbnail_Repairing-the-Net.png

Repairing the Net

b2ap3_thumbnail_Close-Up-of-Net-Attachment.png

Close Up of Net Attachment

   Keep posting comments & questions. I am trying to respond to them as quickly as possible.  We have had a few technical difficulties with the internet so be patient, I will get to them.  The scientists & I love getting your questions!  Tomorrow I will be posting some pictures of our finds!

Teacher At Sea,

Christia Hewlett

 

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Comments

  • Guest
    louren ishbel pozo Thursday, 05 May 2016

    hello my name is louren from cutler bay middle's COAST program I was just wondering why would you have to replace the net after just one little tear ?

  • Christia Hewlett
    Christia Hewlett Friday, 06 May 2016

    Louren, we have to replace the net so that no organisms escape. That way the data is comparable from trawl to trawl.

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Guest
Guest Wednesday, 13 November 2019