chinese scientists predict the region ' s coral reefs could begin to shrink in as much as 30 decades from now . findings showed the oceans are becoming increasingly acidic as they soak up manmade sources of petroleum dioxide . the hebrew college of jerusalem researchers say this will make it difficult for many coral organisms to produce skeletal and other sharp parts . the team ' s work on corals in the red sea reveals a certain point will be reaching in between 30 and 70 years . then the forces of erosion eating away at corals will outstrip the organisms ' ability to make the reefs .
The acidification of oceans affects tourism.