The OOS2025 programme has been launched!
Programme by session Session overview by day Presenter guidelines
Click on the picture to enlarge.
The Ocean’s Greatest Challenges
Click on the picture to enlarge.
There is One Ocean
There is One Ocean, a global common and a critical resource to human prosperity and well-being. It plays a crucial role in regulating the climate and supporting the livelihoods of three billion people, the vast majority in developing countries.
Climate change, overfishing, pollution, and conflict use
The Ocean is under threat from combined pressures such as climate change, overfishing, pollution, and conflicting uses. It is also a source of solutions, for example to mitigate and adapt to climate change.The Ocean urgently needs decisive, swift, and unified efforts to address its critical condition and maximize the solutions it offers. This presents a major challenge for the global community at the Third United Nations Conference on the Oceans (UNOC3), to be held in Nice from 9 to 13 June 2025. The goal is to spur action and implement SDG 14, which is the least funded of all Sustainable Development Goals.
A UNOC3 Special Event dedicated to Science
CNRS and IFREMER have been tasked with organizing the One Ocean Science Congress (OOSC), a UNOC3 Special Event dedicated to Science, and to provide Heads of State, Government, and the broader society, with comprehensive scientific insights on the Ocean's health and future trajectory. Science-informed decisions should enable the conservation and sustainable use of the Ocean, optimize the solutions it offers, and safeguard the services and benefits it provides to humanity.
To learn more about the Third United Nations Ocean Conference: UNOCNICE2025
About the One Ocean Science Congress
The Congress will feature a mix of plenary sessions, including opening and keynote speeches, alongside parallel oral and poster presentations. To enhance interactions between science and society, action and policy, and to engage civil society more broadly, 'townhalls' such as panels and roundtables will also be arranged.
News
Prior to the UNOC 3 conference to occur in Nice on June 9th-13th 2025, in partnership with Côte d’Azur University, Western Brittany University, Sorbonne University and the French Network of Marine Universities, the First International Forum of Marine Universities will be organized.
This International Forum will gather worldwide universities with the objective to “Reinforce transmission of knowledge and education to improve scientific training and enhance awareness of civil society to face ocean challenges”.
To attend the Forum a free registration is required. Please register here:
https://lime3-app3.sorbonne-universite.fr/index.php/856254?newtest=Y&lang=fr 
Prior to the UNOC 3 conference to occur in Nice on June 9th-13th 2025, in partnership with Côte d’Azur University, Western Brittany University, Sorbonne University and the French Network of Marine Universities, the First International Forum of Marine Universities will be organized.
This International Forum will gather worldwide universities with the objective to “Reinforce transmission of knowledge and education to improve scientific training and enhance awareness of civil society to face ocean challenges”.
To attend the Forum a free registration is required. Please register here:
https://lime3-app3.sorbonne-universite.fr/index.php/856254?newtest=Y&lang=fr
In a recently published article, the co-chairs of the One Ocean Science Congress underscore the ocean’s essential role in sustaining planetary health, economic prosperity, and human well-being — while sounding the alarm on the escalating threats posed by climate change, pollution, overfishing, and weak governance.
They present the One Ocean Science Congress (3–6 June 2025) and the 3rd UN Ocean Conference (UNOC3) in Nice, France, as key milestones for advancing ocean sustainability through science-based policy, innovation, and international cooperation. Alongside the Congress, high-level events will address climate resilience and sustainable investment, all contributing to the Nice Ocean Action Plan — a joint outcome aimed at achieving SDG14 and securing a healthy, resilient ocean for future generations.
📖 Read the article here: https://www.openscience.fr/June-2025-Nice-capital-of-the-world-ocean
In a recently published article, the co-chairs of the One Ocean Science Congress underscore the ocean’s essential role in sustaining planetary health, economic prosperity, and human well-being — while sounding the alarm on the escalating threats posed by climate change, pollution, overfishing, and weak governance.
They present the One Ocean Science Congress (3–6 June 2025) and the 3rd UN Ocean Conference (UNOC3) in Nice, France, as key milestones for advancing ocean sustainability through science-based policy, innovation, and international cooperation. Alongside the Congress, high-level events will address climate resilience and sustainable investment, all contributing to the Nice Ocean Action Plan — a joint outcome aimed at achieving SDG14 and securing a healthy, resilient ocean for future generations.
📖 Read the article here: https://www.openscience.fr/June-2025-Nice-capital-of-the-world-ocean