XPost: rec.arts.sf.written, rec.arts.sf.science   
   From: reply1400@merlyn.demon.co.uk.invalid   
      
   In rec.arts.sf.science message , Wed, 15 Jan   
   2014 07:42:14, "Sea Wasp (Ryk E. Spoor)"    
   posted:   
      
   >       Are there long-term reliable salt-water turbines? Salt water's   
   >nasty on most machines, but if you were near the ocean you could use it   
   >as a water source. IF you also had a good location to store the water   
   >and let it out. Which would have to be very very large for good-sized   
   >populations.   
      
      
   That would help, a little, with the rising-sea-level problem.   
      
   But the alternative is to pump air into many large bags deep undersea,   
   and let it out through turbines.  The bags do not need to be very   
   strong; they don't hold the main pressure, but just keep the water and   
   the air apart.  But they do need to be well anchored.   
      
   And relatively minor modifications create the world's biggest bagpipes.   
      
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