Do good for the

Join 2 million people taking small steps for big impact.

Informed by experts, trusted by millions.

World-class experts

+60

Registered nonprofit

See our latest impact report

Our impact adds up, one at a time.

3,056,550

Actions taken

343,865 km²

Ocean protected

$2.1M

Raised for projects

56

Species protected

2,824,632

Trees planted

72,670

Corals planted

Signatures delivered

Plastics petition delivered with over 100,000 signatures

Positive Progress

New Zealand officially calls for moratorium on deep-sea mining

Victory

Costa Rica expands marine protected area to be 27 times larger

Victory

60+ species protected by U.S. ban on deadly driftnets

Milestone achieved

One million mangrove trees restored in Mida Creek, Kenya

Why members from 193 countries love taking action with Only One

Real impact, made easy

Whether you have two minutes or two hours, can join in person or digitally, we connect you with actions that make a difference.

Expert-backed, community-led

Climate and ocean scientists, Indigenous leaders, nonprofit veterans, and many others inform every action our community takes.

100% proven impact

We share live updates on every action you take, from legislation passed to the geolocation of each tree planted.

Stay optimistic!

No more doom scrolling or feeling powerless. Celebrate positive progress and learn how you can help instead.

For everyone who wants to turn climate anxiety into climate action.

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Only One gives us incredible tools to make a difference and track our individual impact.

Lauren Russell
Actress, Ocean Advocate
Los Angeles, US

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Donating directly to causes that have a positive impact to the planet gives me hope we can solve these major world issues we have created.

Jay Johnstone
Only One Member (Starter Plan)
Murcia, Spain

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Only One extends inspiration into tangible, traceable action for all of us.

Carissa Cabrera
Marine Biologist, TikTok Creator
Kailua, Hawaii

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I was thrilled to learn that Only One connects activists with regulators to advocate for ocean conservation. I believe they can restore our oceans within the next decade.

Silvia Tower
Only One Member (Hero Plan)
U.S.

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Intuitive, informative, elegant. Taking action to save our planet is “Only One” click away and I can’t stop smiling!

Ümit Hardal
Explorer, Artist, Activist
Copenhagen, Denmark

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Only One is awesome. It’s great to have an easy place to go, make change, and learn about what we can all do in our every day lives.

Kelsey Williamson
Underwater Photographer, Videographer
French Polynesia & Hawaii, U.S.

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All the impact created is trackable and verifiable, presented in cute dashboards. Why sustainability is so important? Because we have Only One, ONLY ONE planet Earth.

Tien Ming
Only One Member (Starter Plan)
Kuala Lumpur, Malaysia

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Seeing directly where my money goes and reading stories from the communities who benefit from conservation efforts give me hope that small, consistent actions can create long-term impact.

Olivia Dias Bagott
Digital Designer, Strategist
Florianópolis, Brazil

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Our Earth is threatened every day by our actions. I chose to use my voice and donate directly to causes that positively impact our planet and its biodiversity.

Romane Leroy
Only One Member (Starter Plan)
Dunkerque, France
Live

Happening right now, around the globe.

10 free trees if you sign up today

Do more, as a monthly member.

Grow your own ocean forests and reefs

Remove plastic and carbon pollution

Plans from 9.00€ per month

100% of funds go to projects

Take your first action today

Add your voice to campaigns

Join millions to protect wildlife, stop plastic, fight for environmental justice, and tackle the climate crisis.

Learn how to save the planet

Hear from inspiring activists and expert conservationists on steps we can all take to heal our Earth and ocean.

Fund effective solutions

Restore ocean health by growing your own forests and reefs, removing plastic, and eliminating carbon pollution.