World Ocean Day

By Evelyne Daigle in collaboration with Marine Dewailly | 8 June 2012| Transit from Bermuda to Bahamas
687 - I - Photo credit Evelyne Daigle The ocean is our daily highway The ocean is our daily highway
700 - I - Photo credit 1000 days for the planet celebrates World Ocean Day 1000 days for the planet celebrates World Ocean Day
689 - I - Photo credit Evelyne Daigle Sunset on the Atlantic Sunset on the Atlantic
688 - I - Photo credit Evelyne Daigle Silvery gleam of the ocean Silvery gleam of the ocean
690 - I - Photo credit Zettler, Mincer, and Amaral-Zettler Microbes found on plastic particles Microbes found on plastic particles
Écho Action est un programme qui vous propose des trucs pour passer le mot sur la biodiversité. En savoir plus

Far from the cities and landscapes we all know is an ocean that, despite its immensity and apparent resilience, is constantly affected by human activities.

The plastic we see on the beaches of Gaspé or Punta Canna is only a small portion of the garbage floating beyond the shores. We have observed this sad reality aboard the Sedna IV, and it has made us realize just how great an impact humans have had on this great blue expanse.

On this June 8, World Oceans Day, the crew of the Sedna wishes to pay homage to that which is our highway and our daily landscape, whose colours and sparkle change constantly with the light.

The ocean bears our vessel from country to country, from port to port, on its mission to inspire passion for nature. We are witnesses to the beauty of marine life, but also to the pollution that floats among it.

During a meeting with scientists from the Sea Education Association, we learned that marine science is showing with increasing accuracy the impact of plastic pollution on living organisms.

Here is one recent and surprising discovery: an entire miniature ecosystem is developing around the plastic particles floating in the ocean; scientists even have a name for it, the “plastisphere.” It is a veritable microscopic community, including algae, algae eaters, small predators, and parasites. Not only are they attached to the plastic, they eat it! These living organisms are actually breaking down the oceanic plastic debris.

This discovery may explain why the amount of plastic debris in the oceans has not increased since their studies began, while plastic production has quadrupled.

But many questions about the “behaviour” of this plastic and its unsuspected impacts remain unanswered. To protect the ocean, we must first realize just how fragile it is.

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