As well as being home to everything from whelks to whale sharks, the oceans offer a range of critical services, including acting as a source of food and regulating the atmosphere. 

In particular, the oceans are also vital as sponges for green house gases, taking carbon dioxide out of the atmosphere through two processes - dissolving straight into the water column and also through photosynthesis by phytoplankton.  

Today, the oceans soak up around one third of all of human carbon emissions But this comes at a terrible cost. The composition of the oceans is changing to become more acidic, threatening the tremendous diversity of creatures that call them home.

Read More: Saving Our Oceans