Shaka Doug
Contributor
Drew's been blogging lately with the help of his wife Jamie (Thanks Jamie!). He says he will be back on Oahu soon for just a couple of days for a quick repair to some equipment and re-provisioning. He reported today that they found plastic and they also found plastic in the digestive tract of a mahi mahi they caught out there. Here's the text from his latest post.
You can read it all (and I suggest you do) at www.trashvoyage.com
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Day 14 We Found Plastic!!!
June 23rd 2009
Position:
23 Deg 07.34 min. North
149 Deg 55.77.min West
Approx 450 Northeast of Hawaii.
Currently we are sailing wing and wing downwind on a direct heading to Oahu, Hawaii. Yesterday was a good day despite all that happened with the Manta Trawl (BBMT) because we achieved one of our objectives of this voyage.....
One aspect of the danger of plastic in the ocean is the ingestion of plastic by fish that we humans are consuming. I dont think I need to explain the consequences and negative impact of "plastic" fish! That has been one of the objectives of this voyage is to prove plastics are moving their way up the food chain. So while we sail from test area to test area, we set fishing lines out to see if we can catch some additional food for the crew, talk about fresh fish! Also to get "sample" fish to dissect to see if this theory can be documented.
Well yesterday we hooked two Mahi Mahi, also known as dolphin-fish or dorado, they are surface-dwelling ray-finned fish found in off-shore temperate, tropical and subtropical waters worldwide. While Christiana (the on-board scientist) was doing her dissection and collection of tissue samples for toxin testing, she also inspects the digestive tract of both fish. In the smaller 5 lb fish she found some suspect material that was later confirmed by microscopic inspection to be a piece of plastic.
Now it cannot be determined whether the plastic was ingested directly by the fish or through the consumption of a smaller fish it ate. Most likely the Mahi Mahi ate the plastic it's self, thinking it was food because there were no obvious remains of a previous meal, like a smaller fish. The entire dissection and discovery of the plastic was documented on video so we are pretty pleased with ourselves today!!!!
Now Im going to take a moment to respond to some Face Book comments from all my FB friends following my blog. Your comments are being relayed to me from by my awesome "land support" team of 1 (and she happens to be my beautiful wife too!). So please keep posting your comments and questions. It's great to know you are all out there!!! So here's an answer to one of the questions posted by a few people....
It was regarding the growth on the plastic debris and questioning if it wouldnt be a better idea to allow the "colonies" to remain as an ecosystem. This is a good topic, because initially one would think if it attracts growth then its a good thing, but 3 main factors must be taken into account.
1. Plastic has been proven to contain and further absorb toxins, so the dangers of allowing organisms to attach and grow on potentially toxic material would not be beneficial.
2. Another issue is, natural floating ecosystems have a finite lifespan due to decomposition and degradation by the elements, sun, water, wave action etc. Plastic objects last much longer, causing the potential for marine life and organisms to travel well outside their normal range of existence/territory, therefore altering the natural process of species expansion. Last voyage we found a fish living inside a floating plastic square, crate like bucket. That fish when we found, it was 2,500 miles from its natural habitat. This could not have happened if the bucket been made of some other natural biodegradable material that would have deteriorated long before it traveled 2,500 miles.
3. And the most important, eventually all plastic in the ocean will break up to microscopic levels to either be ingested by marine life or become a molecular toxin to the water and eventually to us. So if its plastic its got to get picked up and taken out before becoming part of the ecosystem and not in a good way. The main thing we should be working on is eliminating the unnecessary plastic from our society, like the "one use" trend for items and containers that is happening now. Plus we MUST properly disposing of the rest of the plastic so it stays out of our oceans.
Hope that helps clear up why we are removing the "ecosystems" that have plastic as it's "home base". So please think before you opt for the plastic when asked "Paper or plastic"! Better still, bring your own reusable bags!!! It's good to be green!!!!
Okay back to voyage.....
Winds have calmed to a pleasant 20 knots and the sun is out so we continue to cruise on to Hawaii, occasionally being visited by the random Black Footed Albatross....
They are very difficult to film from a moving boat deck but I am getting better with each fly-by. Just a few more days and I'll be back on my wonderful slice of Paradise, Oahu, for a couple of days while we repair the BBMT (Beloved Busted Manta Trawl)...I'm all most there "land support team of one" Jamie!!!!
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Thanks Drew! Keep up the good work!!
You can read it all (and I suggest you do) at www.trashvoyage.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Day 14 We Found Plastic!!!
June 23rd 2009
Position:
23 Deg 07.34 min. North
149 Deg 55.77.min West
Approx 450 Northeast of Hawaii.
Currently we are sailing wing and wing downwind on a direct heading to Oahu, Hawaii. Yesterday was a good day despite all that happened with the Manta Trawl (BBMT) because we achieved one of our objectives of this voyage.....
One aspect of the danger of plastic in the ocean is the ingestion of plastic by fish that we humans are consuming. I dont think I need to explain the consequences and negative impact of "plastic" fish! That has been one of the objectives of this voyage is to prove plastics are moving their way up the food chain. So while we sail from test area to test area, we set fishing lines out to see if we can catch some additional food for the crew, talk about fresh fish! Also to get "sample" fish to dissect to see if this theory can be documented.
Well yesterday we hooked two Mahi Mahi, also known as dolphin-fish or dorado, they are surface-dwelling ray-finned fish found in off-shore temperate, tropical and subtropical waters worldwide. While Christiana (the on-board scientist) was doing her dissection and collection of tissue samples for toxin testing, she also inspects the digestive tract of both fish. In the smaller 5 lb fish she found some suspect material that was later confirmed by microscopic inspection to be a piece of plastic.
Now it cannot be determined whether the plastic was ingested directly by the fish or through the consumption of a smaller fish it ate. Most likely the Mahi Mahi ate the plastic it's self, thinking it was food because there were no obvious remains of a previous meal, like a smaller fish. The entire dissection and discovery of the plastic was documented on video so we are pretty pleased with ourselves today!!!!
Now Im going to take a moment to respond to some Face Book comments from all my FB friends following my blog. Your comments are being relayed to me from by my awesome "land support" team of 1 (and she happens to be my beautiful wife too!). So please keep posting your comments and questions. It's great to know you are all out there!!! So here's an answer to one of the questions posted by a few people....
It was regarding the growth on the plastic debris and questioning if it wouldnt be a better idea to allow the "colonies" to remain as an ecosystem. This is a good topic, because initially one would think if it attracts growth then its a good thing, but 3 main factors must be taken into account.
1. Plastic has been proven to contain and further absorb toxins, so the dangers of allowing organisms to attach and grow on potentially toxic material would not be beneficial.
2. Another issue is, natural floating ecosystems have a finite lifespan due to decomposition and degradation by the elements, sun, water, wave action etc. Plastic objects last much longer, causing the potential for marine life and organisms to travel well outside their normal range of existence/territory, therefore altering the natural process of species expansion. Last voyage we found a fish living inside a floating plastic square, crate like bucket. That fish when we found, it was 2,500 miles from its natural habitat. This could not have happened if the bucket been made of some other natural biodegradable material that would have deteriorated long before it traveled 2,500 miles.
3. And the most important, eventually all plastic in the ocean will break up to microscopic levels to either be ingested by marine life or become a molecular toxin to the water and eventually to us. So if its plastic its got to get picked up and taken out before becoming part of the ecosystem and not in a good way. The main thing we should be working on is eliminating the unnecessary plastic from our society, like the "one use" trend for items and containers that is happening now. Plus we MUST properly disposing of the rest of the plastic so it stays out of our oceans.
Hope that helps clear up why we are removing the "ecosystems" that have plastic as it's "home base". So please think before you opt for the plastic when asked "Paper or plastic"! Better still, bring your own reusable bags!!! It's good to be green!!!!
Okay back to voyage.....
Winds have calmed to a pleasant 20 knots and the sun is out so we continue to cruise on to Hawaii, occasionally being visited by the random Black Footed Albatross....
They are very difficult to film from a moving boat deck but I am getting better with each fly-by. Just a few more days and I'll be back on my wonderful slice of Paradise, Oahu, for a couple of days while we repair the BBMT (Beloved Busted Manta Trawl)...I'm all most there "land support team of one" Jamie!!!!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Thanks Drew! Keep up the good work!!