video transcript

According to marine scientist there is no ecosystem on earth. More vulnerable to global warming and coral reefs. Fear that higher levels of CO2. Causing the oceans become more acidic. And that corals like the once abundant Al -- in the Caribbean are facing an almost impossible struggle for survival. -- court has already looked at critically features and its numbers won't dramatically since the early 1980. Marine biologist Chris Langdon says human beings are largely blame. Since the starting -- revolutionary. Released tremendous amounts of CO2 into the atmosphere. And about 25% of that is taken up by the ocean each year. And that's a very good thing because global warming would hurt -- much worse today if that wasn't happening. But the downside is that the -- take up CO2 makes it more acidic. And its oceans become more acidic it puts a certain organisms under stress. Peel -- and reproduced by broadcast spawning releasing millions of eggs and sperm into the water. Researchers say they've decreased PH levels disturbing in this process. The -- also produced a sexually by branching all of course reaching another product of global warming. Killing them faster than they're able to reproduce. Marine biologist -- Albright says that if the corals two minutes to reproduce their growth has slowed dramatically by its certification. We Arafat generated from missed the chemistry at the -- other race. That has been unprecedented. It's happening on the order of hundreds of years as opposed to thousands of years which has happened in the past and so these. The likelihood it these organisms being able to adapt is very small. Syndication and bleaching or just who have applied to attack in coral reefs throughout the world. Researchers say pollution overfishing and disease are contributing to the probable extinction of many species of coral in the near future -- Because we're losing -- of an unprecedented rate we need to be replacing. At that Reid and in this study -- and indicates that -- specifications. Interfering with with that ability. Albright says the only way to restore the oceans chemical balance is to replace carbon based fuels with renewable energy sources. Although she admits that's unlikely to happen anytime soon. And -- Reuters.