Oceans face `deadly trio` of threats, study says

The world`s oceans are under greater threat than previously believed from a "deadly trio" of global warming, declining oxygen levels and acidification, an international study said on Thursday.

`Acidification may wipe out corals in one generation`

The world`s coral reefs may be wiped out within a single generation thanks to the ravages caused by ocean acidification, pollution and overfishing, says an Australian expert.