Two reasons: low impact to water life and not very active commercial shipping. Because the evaporation will create a larger percentage of salt, there is a conc

Two reasons: low impact to water life and not very active commercial shipping. Because the evaporation will create a larger percentage of salt, there is a concern that this would affect the local biology. This is double for any industrial accident that happens. However there is a large "Dead Zone" between South America and Australia [1] where both problems will be far away from any life. The second is there is less commercial and personal ship traffic in that part of the world [2], lessening the possible collisions and other accidents because of wayward stills. [1] http://www.noaanews.noaa.gov/stories2008/20080305_oceandesert.html http://www.noaanews.noaa.gov/stories2008/20080305_oceandeser... [2] https://people.hofstra.edu/geotrans/eng/ch1en/appl1en/maritimeroutes.html https://people.hofstra.edu/geotrans/eng/ch1en/appl1en/mariti...