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Wrack line on a sandy beach adjacent to a sand dune ecosystem. Beach wrack or marine wrack is organic material (e.g. kelp, seagrass, driftwood) and other debris deposited at high tide on beaches and other coastal areas. This material acts as a natural input of marine resources into a terrestrial system, providing food and habitat for a variety ...
Debris on beach near Dar es Salaam, Tanzania Debris collected from beaches on Tern Island in the French Frigate Shoals over one month. Researchers classify debris as either land- or ocean-based; in 1991, the United Nations Joint Group of Experts on the Scientific Aspects of Marine Pollution estimated that up to 80% of the pollution was land-based, [5] with the remaining 20% originating from ...
In Galveston, programs address marine debris, including cigarette butts and fishing lines. Collaborating with the Surfrider Foundation , volunteers have collected over 285,000 cigarette butts and ...
Most debris consists of small plastic particles suspended at or just below the surface, evading detection by aircraft or satellite. Instead, the size of the patch is determined by sampling. The estimated size of the garbage patch is 1,600,000 square kilometres (620,000 sq mi) (about twice the size of Texas or three times the size of France). [52]
They try to determine differences of marine debris in macro (>25 mm), meso-debris (2–25 mm) and micro-debris (<2 mm) densities. The result of their study shows that meso-debris which are rounded plastic products are found on the windward coastlines because the windward coastlines experience higher pressure from distal marine-based debris.
The elevated levels of pollutants can be detected over a vast area estimated to be 2.6 million square kilometers (one million square miles), or about 1.5 times the size of Texas, [3] with the debris found along a nearly 2,500 nautical mile straight line route. [7]