Oceans and ocean acidification
When a gas like carbon dioxide builds up in the atmosphere, the oceans will absorb much of the surplus gas.
The extra carbon dioxide dissolved in sea water will turn the oceans more acidic.
Shell building and calciferous marine organisms and coral reefs may suffer with increased acidity.

The acidification of the ocean is regarded as the second very serious ecological consequence of the increasing accumulation of CO2 in the atmosphere

  1. Carbon dioxide reacts chemically with sea water to produce carbonic acid

    Coral reefs have exceptional biodiversity, and are now threatened by warmer oceans as well as acidification.

    The Monaco Declaration is an internationally, scientifically coordinated response to the ocean acidification problem

    Reef at Vanuatu. Photo: Yannick Beaudoin