Illustration of scientists and people with the marine environment

Oceans of Impact

The ocean has been experiencing substantial changes in marine physics, chemistry and biology including ocean acidification, rising seawater temperature, ocean deoxygenation and sea level rise. These four, often interacting factors, are expected to increase over the coming decades depending on the concentration of greenhouse gases in the atmosphere. It is imperative that international decision-makers and stakeholders understand the enormous role the ocean plays in sustaining life on Earth, and the consequences of a high CO2 world for the ocean and society.  
 Oceans of Impact front cover showing scientists and people and the marine environment

An international partnership * led by Plymouth Marine Laboratory has developed an overview of these four stressors, their impact and options for next steps:

Download the Oceans of Impact guide (pdf - 3MB).

Developed for the Commonwealth Marine Science Event 2018, this publication is an initiative by UK scientists and international partners, led by Plymouth Marine Laboratory, providing evidence-based science for policy making on the impacts of increasing concentrations of carbon dioxide and other greenhouse gases on the ocean and human systems.

This guide was also presented at the United Nations Framework Convention on Climate Change meeting (UNFCCC) in Bonn. PML and its international partners have been raising awareness on ocean matters at these UNFCCC meetings since 2009. 

Please email Thecla Keizer ( for further details.


Related videos

Ocean acidification: Connecting science, industry, policy and public

A powerful short film on Ocean acidification which brings together a wide range of stakeholders including, HSH Prince Albert II of Monaco, school children, a Plymouth fishmonger, a UK government Chief Scientific Adviser, representatives from industry and policy making departments, as well as a group of internationally recognised expert scientists.

Video still of ocean acidificationOcean acidification: Connecting science, industry, policy and public (English)

L'acidification des océans: La création de liens entre la science, l'industrie, la politique et la société (French subtitles)

Ocean acidification: Connecting science, industry, policy and public (Brazilian Portuguese subtitles)

Una película corta sobre la acidificación del océano: Conectando la ciencia, industria, política y el público (Spanish subtitles)

Ocean acidification: Connecting science, industry, policy and public (Korean subtitles)

The Other CO2 Problem

A short, powerful and entertaining animation about the issue of ocean acidification, produced by Ridgeway School (Plymouth, UK) and Plymouth Marine Laboratory. Funded by the European Project on Ocean Acidification.

The other co2 problem video screenshotThe Other CO2 Problem animation (English)

L'autre problème du CO(French)

The Other CO2 Problem animation (Spanish)

The Other CO2 Problem animation (Italian)

The other CO2 Problem animation (Japanese subtitles)


BIOACID - Exploring Ocean Change

From the Arctic to the tropics, ocean acidification changes life in the sea. By absorbing carbon dioxide (CO2) from the atmosphere, the ocean slows down global climate change. But in seawater, the greenhouse gas causes a chemical reaction with far-reaching consequences: carbonic acid is formed, and the pH drops.

The German research network BIOACID examines the effects of acidification on the life and biogeochemical cycles in the ocean - and on all those who depend on it.

This video is available with English , German and French subtitles

BIOACID video screenshot of a shoal of fish underwater

Ocean Acidification: An Ecosystem Facing Dissolution

As a large sink, the ocean absorbs carbon dioxide from the atmosphere. But in sea water, the gas reacts to produce carbonic acid - a threat for organisms building their shells and skeletons from calcium carbonate. A film from GEOMAR | Helmholtz Centre for Ocean Research Kiel.


Testing the Waters (English Version)

Ocean acidification - known as "the other CO2 problem" - is now also affecting the ecosystems of the Mediterranean. The scientific project MedSeA, funded by the European Community, has been studying the impacts of the phenomenon throughout the Mediterranean region for the last three and a half years. The video shows key information, scientific knowledge, and findings of the MedSeA Project, against the beautiful (and endangered) setting of the Mediterranean waters.