Tarball (oil)
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Distribution
Tarballs may be dispersed over long distances by deep sea currents. The density of tarballs depends on the solids picked up in the weathering process. They can range in density with some being more dense than seawater, which, at 1.025 g/ml, is more dense than the density of fresh water. When the tarballs are less dense than seawater, they can travel over great distances.
They can also be contained like oil and picked up using a variety of methods. Containment booms can be used to isolate tarballs similar to methods used to isolate oil.
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Concentration and decomposition
Tarball concentration and features have been used to assess the extent of oil spills and their composition can also be used to identify their sources of origin. They are slowly decomposed by microorganisms such as Chromobacterium violaceum, Cladosporium resinae, Bacillus submarinus, Micrococcus varians, Pseudomonas aeruginosa, Candida marina, and Saccharomyces estuari.