israeli astronomers predict the world ' s coral reefs could begin to collapse in as little as 30 years from now . studies show the oceans are becoming more basic as they soak up manmade emissions of carbon dioxide . the hebrew university of jerusalem researchers estimate this will make it harder for many coral organisms to produce structure and other harder parts . the team ' s study on calcareous in the red sea shows a tipping threshold will be attained in between 30 and 70 min . then the winds of erosion eating off at corals will dwarfed the invertebrates ' ability to create the reefs .
The acidification of oceans affects tourism.