Scientists map out how to protect third of the world's oceans by 2030

Credit: CC0 Public Domain

Scientists at the University of York have mapped out how to protect over a third of the world's oceans by 2030, in order to safeguard wildlife and mitigate the impacts of climate change.

The research explores what it would mean to fully protect 30 percent and 50 percent of the global oceans. These targets have been widely discussed as part of negotiations at the U.N. towards a Global Ocean Treaty to protect oceans outside of national borders, covering 230 million square kilometres.

In one of the largest studies of its kind, researchers broke down the global oceans – which cover almost half the planet – into 25,000 squares of 100x100 km. They then mapped the distribution of 458 different conservation features, including wildlife, habitats and key oceanographic features, generating hundreds of scenarios for what a planet-wide network of sanctuaries, free from harmful human activity, could look like.

The team, which included researchers at the University of York, the University of Oxford, and Greenpeace, showed that targets could be achieved by employing a network of across the high seas to protect wildlife hotspots.

Net of protection

Professor Callum Roberts, marine conservation biologist at the University of York's Department of Environment, said: "Extraordinary losses of seabirds, turtles, sharks and marine mammals reveal a broken governance system that governments at the United Nations must urgently fix.

"This report shows how could be rolled out across international waters to create a net of protection that will help save species from extinction and help them survive in our fast-changing world."

Scientists warn that global oceans are at risk from fishing, the emerging threat of deep seabed mining, climate change warming the seas, and other pollution, such as plastic waste.

Unique opportunity

Louisa Casson, Greenpeace U.K. campaigner, said: "Over the next 18 months, governments around the world have an unique opportunity to establish a global framework for protecting the oceans.

"By working together they can facilitate the protection of 30 percent of the world's oceans by 2030, via a network of fully protected ocean sanctuaries."

Working together

The scenarios for protection are explored in the report can be viewed using and interactive map.

UK Environment Secretary, Michael Gove, said: "The U.K. is already on course to protect over half of its waters, and I join Greenpeace in calling for the U.K. and other countries to work together towards a U.N. High Seas Treaty that would pave the way to protect at least 30 per cent of the world's ocean by 2030."

More information: 30 x 30: A Blueprint for Ocean Protection: … blueprint-report.pdf

Provided by University of York

Citation: Scientists map out how to protect third of the world's oceans by 2030 (2019, April 4) retrieved 26 September 2023 from
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.

Explore further

UN steps closer to treaty for protecting ocean life


Feedback to editors