Scientists have warned that world's oceans and creatures living in them are day by day running short of time as the earth's climate change is causing irreversible harm to them. Some immediate and considerable reductions in greenhouse gas emissions is one of the most important way through which this massive impact on marine ecosystem could be prevented, they added.

A team of researchers recently compared the fate of the oceans in two scenarios: the first was 'business-as-usual' approach and the other included drastic cuts in emissions.

It was found that by 2100 the 'business-as-usual' would have an enormous and an irreversible impact on ocean ecosystems and on the services provided by them, such as fisheries.

The findings showed that even if the carbon dioxide (CO2) emissions will be reduced by more than 2% in order to prevent rising temperature, marine ecosystem will still suffer.

The findings of the international team led by Dr. Jean-Pierre Gattuso from the Laboratoire d'Oceanographie de Villefranche in France was presented in the journal Science.

The team said, "Impacts on key marine and coastal organisms, ecosystems, and services from anthropogenic (man-made) CO2 emissions are already detectable, and several will face high risk of impacts well before 2100, even with the stringent CO2 emissions scenario".

They stated that these impacts could be seen across all the altitudes and have become a global concern. Any new global climate agreement that fails to minimize the impact on oceans will be inadequate, said researchers.