The 2025 United Nations Ocean Conference (officially the 2025 United Nations Conference to Support the Implementation of Sustainable Development Goal 14; abbreviated UNOC3) was a United Nations conference held in Nice, France, from 9–13 June 2025 which sought to mobilize action for the conservation and sustainable use of the oceans, seas and marine resources. The conference was the third of its kind, following the 2017 conference in New York City and a second in Lisbon. It was jointly organized by France and Costa Rica.
| 2025 United Nations Ocean Conference | |
|---|---|
| Begins | 9 June 2025 |
| Ends | 13 June 2025 |
| Locations | Nice, France |
| Inaugurated | 2017 |
| Previous event | 2022 |
| Next event | 2028 |
| Organised by | France Costa Rica |
| Website | [1] |
Background
The goal of the UN Ocean Conferences is to support the implementation of Sustainable Development Goal 14, "Life below water". The 2025 conference was the third, following the first in New York (2017) and another in Lisbon (2022). The next conference is planned to take place in 2028 in South Korea.
Participation
The conference was attended by government representatives, as well as intergovernmental and non-governmental organizations, financial and educational institutions, scientists, and Indigenous representatives.
Outcomes
At the conference, the Solomon Islands and Vanuatu reached an agreement on the creation of the Melanesian Ocean Reserve, which will safeguard the two countries' national waters, as well as those of Papua New Guinea and the exclusive economic zone of New Caledonia, for a total of more than 6,000,000 square kilometres (2,300,000 mi2). It will be the world's first multinational Indigenous-led marine reserve. French Polynesia also announced the creation of a 4,800,000 square kilometres (1,900,000 mi2) marine protected area. Spain has announced its intention to create five new protected areas.
The High Seas Treaty was a major focus. During the summit, the treaty was ratified by 19 nations, bringing the total number of ratifications to 51 out of the required 60. Yet more states ratified the treaty following the conference, and it entered into force when Morocco ratified in September 2025.
The European Commission pledged €1 billion (US$1,162,858,000) to marine conservation. Germany launched a programme to remove underwater munitions from its seas, and New Zealand committed US$52 million to ocean governance.
The 37-country Coalition for a Quiet Ocean was launched during the conference. Led by Panama and Canada, the mission of the coalition is to reduce harmful noise pollution in the ocean. Noise pollution can interfere with animals' ability to navigate, communicate, and find food, threatening marine biodiversity.
See also
- United Nations Ocean Conference
- 2017 United Nations Ocean Conference
- UN-Oceans
- Sustainable Development Goal 14
- United Nations Conference on Sustainable Development
- Sustainability and environmental management § Oceans
- Ocean governance
- Spaceship Earth
- Effects of global warming on oceans
- Resource management
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