The fate of our world hangs in the balance.

Parts of Antarctica are warming faster than anywhere else on Earth. One Ocean Planet is working to hold international bodies accountable — and protect the last great wilderness before it’s too late.

Tell CCAMLR to stand up
to the krill fishing industry.

The window to act is narrow. Add your name to the global call — and demand that CCAMLR fulfil its mandate to protect the Southern Ocean.

The window to act is narrow. Add your name to the global call — and demand that CCAMLR fulfil its mandate to protect the Southern Ocean.

WHY ANTARTICA

A global commons. A global responsibility.

The Southern Ocean connects the Pacific, Indian, and Atlantic Oceans, regulating heat and carbon for the entire planet. The Antarctic Circumpolar Current — the strongest on Earth — could lose 20% of its strength by 2050 if current warming trajectories continue.

Krill are the foundation of all life in the Southern Ocean — and industrial supertrawlers are extracting them at unprecedented rates, for pet food, fish feed, and krill oil supplements. Remove the krill, and the entire food web collapses.

At the same time, CCAMLR — the body mandated to protect Antarctic marine life — has failed to establish a single new Marine Protected Area in eight years. In 2024, it moved backwards: removing the spatial limits that had dispersed krill fishing away from critical wildlife feeding grounds.

“The trawlers have reached Antarctica, and they are here for the krill. We may now be removing the foundation of an entire ecosystem.”

— David Attenborough, Ocean with David Attenborough, 2025

RESEARCH AND REPORTS

The science behind the urgency

KRILL AND THE EOCSYSTEM

Krill: The Species the Whole Southern Ocean Depends On

Antarctic krill contribute between 70% and 96% of the calories consumed by penguins, whales, seals, and seabirds. They also sequester ~23 megatonnes of carbon annually near the Peninsula alone — carbon retained in the deep ocean for over 100 years. Some projections estimate krill biomass could decline by 50% to near-extinction by 2100 under business-as-usual warming.

CLIMATE AND ICE

Melting Point: What Antarctic Ice Loss Means for the Planet

The Antarctic Circumpolar Current — the strongest on the planet — could lose 20% of its strength by 2050 as ice shelves melt and polar freshwater disrupts ocean circulation. New research confirms this is already under way, with consequences that extend far beyond the Southern Ocean.

CLIMATE AND ICE

Who Governs the Last Ocean? The Case for Reforming Southern Ocean Governance

The Southern Ocean plays a decisive role in regulating the global climate, sustaining marine biodiversity, and supporting human wellbeing — yet the governance regime that exists to protect it has entered systemic failure. Political stalemates, inequitable veto powers, and the prioritisation of short-term extractive interests are undermining decades of international law. This analysis examines how, and what transformative change would look like.

DOCUMENTARY

Antártida: Dominio Uno

An immersive documentary following the effort to establish Domain 1 — the proposed Marine Protected Area covering the Western Antarctic Peninsula. From the people pushing for its creation to the supertrawlers operating within it, Antártida: Dominio Uno makes the stakes visible. Watch the documentary — then sign the petition.

ACTIVE CAMPAIGN

All eyes on Antartica

A coalition of scientists, ocean leaders, photographers, policymakers, and advocates united as the Antarctic Avengers — calling for the protection of the Southern Ocean. Our co-founder Carolina Manhusen is an Antarctic Avenger, leading One Ocean Planet’s voice to this global call to action.

The campaign demands CCAMLR reform, closure of the Southern Ocean to krill fishing, establishment of the Antarctic Peninsula MPA, and protection of at least 30% of Antarctica’s high-value waters under the 30×30 target.

Close krill fisheries

Close the Southern Ocean to krill fishing to protect Antarctic wildlife, and safeguard ecosystems and global climate stability.

Establish Peninsula MPA

Establish the Domain 1 Marine Protected Area covering the Western Antarctic Peninsula — a proposal in development since 2012 that has been repeatedly blocked at CCAMLR.

Reform CCAMLR

Reform CCAMLR’s governing structure to ensure the implementation of its mandate to protect Antarctic wildlife — ending the political vetoes that have blocked progress for over a decade

30×30 target

Hold CCAMLR member states to their Kunming-Montreal commitment to protect 30% of land and sea by 2030 — starting with the waters they are mandated to safeguard.

ANTARTIC AVENGERS

Carolina Manhusen

Co-founder, One Ocean Planet
Antarctic Avenger

Other avengers inlude:

Dr Sylvia Earle
Benedict Cumberbatch
Andy Mann

Paul Nicklen
James Blunt
Cristina Mittermeier
Lord Fakafanua of Tonga
and 100+ signatories worldwide

WHO WE’RE WORKING WITH

Stronger Together

SeaLegacy

OCEAN STORYTELLING

ANTARCTIC ADVOCACY

Co-founded by National Geographic photographers Paul Nicklen and Cristina Mittermeier, SeaLegacy uses stunning visual storytelling to mobilise action for ocean protection. A signatory and supporter of the All Eyes on Antarctica report.

Antarctic Avengers

MPA ADVOCACY

CCAMLR REFORM

Co-founded by National Geographic photographers Paul Nicklen and Cristina Mittermeier, SeaLegacy uses stunning visual storytelling to mobilise action for ocean protection. A signatory and supporter of the All Eyes on Antarctica report.

Blue Marine Foundation

MARINE PROTECTION
POLICY ADVOCACY

A signatory to the All Eyes on Antarctica report, Blue Marine Foundation works globally to return the ocean to health — including through MPA establishment, sustainable fisheries reform, and policy engagement at international bodies.

Tell CCAMLR to stand up
to the krill fishing industry.

The window to act is narrow. Add your name to the global call — and demand that CCAMLR fulfil its mandate to protect the Southern Ocean.

Lifestyle

Arksen

Arksen is a purpose-driven company creating adventure vessels, vehicles, and experiences that inspire exploration while supporting ocean conservation, scientific research, and environmental action. 

Client Earth

ClientEarth is an environmental law organisation that uses the power of the law to protect nature, tackle climate change, and hold governments and businesses accountable for environmental action. 

Earth Law Center

Earth Law Center works to transform legal systems by recognising the inherent rights of nature, helping ecosystems thrive through legal advocacy, policy development, and education. 

MICHAEL ROSEN

Michael Rosen has experience at a partner and co-founder level in private equity and venture capital funds. He has evaluated, executed and managed investments across many sectors and stages, raised capital, managed teams and worked closely with portfolio companies. He was the COO of a listed investment vehicle, and most recently the CIO of Ocean Born Impact where he oversaw investment strategies focused on companies that positively impact planetary health, emphasizing areas such as the energy transition, clean transportation, sustainable production, and enabling technologies.

 

Earlier in his career, Michael served as a Partner at Pamplona Capital Management, where he was responsible for identifying and managing investment opportunities across various sectors. His career began as an Analyst in the Financial Sponsors Group at Merrill Lynch in London.

 

Michael continues to make and support impactful investments that combine environmental sustainability with technological innovation, leveraging his extensive experience in finance and investment management. His investments include impact-focused businesses such as Olio (food waste), Skin Analytics (Al for skin cancer detection), Bramble Energy (hydrogen fuel cells), and CHOOOSE (carbon-offsetting and mitigation).

 

Michael graduated from Oxford University in 2001 with a first class degree in PPE (Philosophy, Politics and Economics), and in 2024 he published his first novel, The Consciousness Company, about a start-up company.

 

Michael is currently a venture partner for the impact fund, Mustard Seed Maze, and is happy to talk about private equity, venture capital and impact investing.