6 June 2025 - The Ocean is in deep crisis. Factors such as acidification, declining fish stocks, rising temperatures and widespread pollution are contributing to a catastrophic decline in biodiversity: over half of marine species are at risk of extinction this century.
The urgent need to restore the Ocean will be the focus of a major international conference taking place in Nice, France, this June. This will be the first UN Ocean Conference since the adoption of a legal agreement for the conservation and sustainable use of marine biodiversity and the protection of life in the Ocean will be a key topic.
Peter Thompson, the Secretary General's Envoy for the Ocean, Alfredo Giron, Head of the Ocean Action Agenda at the World Economic Forum (WEF), and Minna Epps, who runs the Ocean Program at the International Union for the Conservation of Nature (IUCN), spoke to UN News ahead of the Conference, to talk about UN-led initiatives designed to protect marine biodiversity.
UN News: How serious is the marine biodiversity crisis?
Minna Epps: We’re in really dire straits. If we don't protect and restore the Ocean this is going to have devastating consequences for all those services that we are dependent on. The entire climate is dependent on the Ocean as a climate regulator. However, we don't want the Ocean to absorb more carbon dioxide, because that's what makes it acidic, so we need to start by cutting emissions.
If you are in an airplane and you fly over a forest, you can see deforestation, that a habitat has been lost. The same thing is happening in the Ocean, but we can't really see it. Another effect of climate change is marine heat waves, when water temperature increases over an extended period. A marine heat wave in Panama wiped out around 75 per cent of coral diversity.
Or take coral reefs. These make up less than one per cent of the Ocean, but almost 25 per cent of marine species depend on them. Reefs also protect against storm surges and extreme weather events.
Peter Thomson: Fossil fuels are causing man-made global warming, which is heating the Ocean at an alarming rate, which is causing changes in ecosystems, rising sea levels and the death of coral.
How can Homo sapiens survive on a healthy planet if you don't have a healthy Ocean? And how can you have a healthy Ocean if you don't have a coral in it? So, my message is, leave fossil fuels in the ground. Get as fast as we can to an electrified world, an equitably electrified world powered by renewable energy.
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