Mountains, canyons, plains — these geological features are not only present on land, but also under the sea, where scientists have now charted them in incredible detail in the ocean surrounding Antarctica. The five-year project mapped 18.5 million square miles, and even revealed a new deepest point in the Southern Ocean, a depression lying 7,432 meters (24,383 feet) below sea level called the Factorian Deep. This study and others like it around the world are filling major scientific gaps in our understanding of what the ocean floor looks like, a key part of knowing how to foster ocean health. More mapping also enables us to make an even stronger science-backed case for marine protected areas. If you want to turn this positive progress into action, you can join us today as we call on world leaders to protect Antarctica and secure the largest act of ocean protection in history. We’re close to reaching our goal of 250,000 petition signatures!
Reports & Financials
Our work is made possible by the generosity and commitment of our dedicated donors. As a philanthropically funded organization, we carefully steward every contribution to maximize impact, collaborating with our partners on the frontlines of policy change to restore ocean health and unlock the ocean’s potential as a climate solution.

2024
Form 990 (coming soon)
“With their exceptional creativity and campaigning nouse, we worked together to win broader grassroots support for our goals and increase public pressure on EU decision-makers at a critical moment – the EU elections.”
Helen Willetts, Seas at Risk 2024 Campaign Partner

2023
“Only One’s strike force, dynamism, and creativity supported our advocacy work. This partnership gave a new scale to our ambition by bringing together over 100,000 citizens and 27 organizations in support of better protection for French waters.”
Gauthier Carle, Ocean & Climate Platform 2023 Campaign Partner

2022
“Only One was able to pick up a ball that was already rolling and move it further than we ever could have done alone. The voice of individual members of the public has not been given enough attention until now as a tool to influence ocean policy.”
Emma Wilson, Deep Sea Conservation Coalition 2022 Campaign Partner
2021
2020
Gifted Services
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