Getting carbon into the ocean is one matter. Getting it down to the depths is another.
http://www.whoi.edu/page.do?pid=116857&cid=30687&cl=23452&tid=5782

Jack Cook, Woods Hole Oceanographic Institution

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This interactive graphic shows the different components of the ocean biological pump, i.e., how carbon in the form of either plankton or particles moves into the ocean's depths. The diagram illustrates the processes at the surface, 0-100 meters, 100-500 meters, and below 500 meters.

Subject: Geoscience:Atmospheric Science:Climatology , Environmental Science:Global Change and Climate
Grade Level: High School (9-12), Middle (6-8)
Theme: Teach the Earth:Enhancing your Teaching:NGSS, Teach the Earth:Course Topics:Environmental Science, Atmospheric Science, Teach the Earth:Incorporating Societal Issues:Climate Change