Skipper/Founder: Bjorn Bertoft

bjorn@bertoft.com  |  +46 70 00 58 660

www.100sww.com   www.100sunwindwater.com   info@100sunwindwater.com

 

 

 

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Micro plastic trawling in the sunset

2018/08/05

Here is a story on my little micro plastic trawling mission. You all know about the plastic problem by now: Like that there is plastic debris lumps floating around in our oceans larger than THREE times the size of France. But that is not the worst part, the worst part is the fact that all plastic degenerates into micro plastic particles and further on to nano plastics. Plankton then eat it, then shrimps, fishes, crabs, birds, whales and eventually we eat and drink it ourselves. You have probably seen the terrible images of birds, dolphins and whales with their bellies' full of pretty large plastic pieces. And you have most likely heard Ellen Mc Arthur's statement: "If we don't stop now there will be more plastic than fish in the Oceans by 2050"

 

Google micro plastic and you will get the picture.

 

Here is how I do my "citizen science project" in collaboration with Professor Martin Hassellöv, at the Marine Department at University of Gothenburg:

 

Professor Hassellöv and his students has prepared green bags with tubes and filter attached to them for me. The tubes are packed in aluminium foil to keep them away from plastic. The green plastic bag is used on purpose...when analyzing the results, they will not count the green micro plastic particles of that color/kind that might end up in the filter..

 

The tube with the filter is then attached to the very end of the long trawl net. I have marked it with place and date.

 

While the tube, filter and net is waiting, I will prepare the spinnaker boom and other stuff in front of the boat before launching the trawl...as seen in the video below:

Then when that is in the water I have to launch the trawl from the back of the boat as seen in the video here:

I then mark on the plotter where it was droped, so I can keep track on the exact position and the exact distance sailed with the trawl/filter in the water. It shall be a distance between 2-5 Nautical Miles.

And then, we just have to get the speed going...so the trawl is pulled up to the surface as you can see on the image and video here (sorry for blurry image and video - the light wasn't too generous to us after the sun went to bed):

Later on I will show you what we got in the filter at this mission...

 

 

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