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The Plastic Ocean
Michael Gonsior Bonnie Monteleone, William Cooper, Jennifer O’Keefe, Pamela Seaton, and Maureen Conte
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Plastic does not biodegrade it photo-degrades breaking down into small particles that wreck havoc with marine life
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Can you tell which is the hydrozoan and which is the plastic cheese wrap?
Unfortunately, marine
creatures mistake plastics in
the ocean for food
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Unfortunately, marine
creatures mistake plastics in
the ocean for food
- turtles
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Unfortunately, marine
creatures mistake plastics in
the ocean for food
- fish
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Unfortunately, marine
creatures mistake plastics in
the ocean for food
- Whales
Dwarf sperm whale
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Unfortunately, marine
creatures mistake plastics in
the ocean for food
- Seabirds
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Unfortunately, marine
creatures mistake plastics in
the ocean for food
- And the list goes on and on
and on….
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Marine Debris also creates navigational hazards
Radar bar deliberately cutoff from
a large vessel
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• 1 meter X .5 meter
• 330 micron net
• 2-3 knots
• Varied time from
15 minutes to 1 hr
Collecting samples using a manta trawl
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Focus &
Ecosystem The Plastic Ocean Project http://www.plasticoceanproject.org/
Underwater look at the trawl
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Samples from the North Atlantic Gyre (Bermuda Atlantic Time Series Station (BATS))
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Results from first set of samples in the North Atlantic Sargasso Sea
Separated samples by size, type, and color
(1-2.36 mm, most fragments are white)
Rough Estimate from study
Sargasso Sea is 3,520,000 km= 3,440 tonnes of plastic
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Data comparison 2009 and 2010 surveys
• combined average
NA subtropical gyre
surface waters
~3200 tonnes of plastic
• plastic distribution is
highly variable- some
of this can be associated
with eddies
• association between
plastic distribution
and Sargassum mats
is not strong
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Findings Every Sargasso trawl
contained plastic
Plastics were extremely heterogeneous
Preliminary data suggests there is an increase in accumulation
Plastics washed out to sea appear to photo-degrade, fragment, and wash up on Bermuda ‘s beaches
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PROCESSING THE SAMPLES
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