items

Do something for our planet, print this page only if needed. Even a small action can make an enormous difference when millions of people do it!

Figure

Ocean acidity over the past 25 million years and projected to 2100

Figure Created 12 Jan 2011 Published 13 Jan 2011 Last modified 24 May 2017

1 min read

The ‘pH’ is a measure of acidity – the lower the number the more acidic the ocean becomes. On a geological timescale, ocean pH has been relatively stable. Recently, oceans have been acidifying fast and this is projected to continue at a rate unprecedented for millions of years.