Alexandra Cousteau
Corporate sustainability strategies consistently overinvest in land-based solutions and undervalue the ocean. Water security is embedded in food systems, supply chains, and coastal infrastructure, making it a material business risk rather than a reputational one. Boards face growing pressure to distinguish credible ocean commitments from greenwashing, but few have access to the scientific basis needed to do so.
When climate commitments face growing scrutiny for scientific credibility, Alexandra Cousteau – co-founder of Oceans2050 and a National Geographic Emerging Explorer – helps organisations translate ocean and water science into ESG strategy grounded in peer-reviewed evidence.
Full Profile
Why organisations work with Alexandra Cousteau
- Oceans2050, which she co-founded and leads as President, published the first peer-reviewed global assessment of seaweed carbon sequestration in Nature Climate Change (2025) – giving her ocean restoration arguments a scientific grounding most sustainability voices cannot match.
- She reframes water security as a material business risk rather than a reputational issue, mapping how freshwater and ocean health are embedded in supply chains, food production, and coastal infrastructure in ways that affect operations, procurement, and investor disclosure.
- She has testified before the U.S. Congress on water policy and maintains direct relationships with heads of state and senior policy makers, giving organisations a credible connection point at the intersection of science, advocacy, and government decision-making.
- She pioneered real-time expedition storytelling on social media before it was standard practice – in 2010 she led National Geographic’s first interactive expedition, a five-month journey across North America – making her one of few climate voices who has demonstrably mobilised both institutional and popular attention at scale.
- As architect of the Blue Cities Alliance through Oceans2050, she connects organisations to a growing network of coastal city governments taking measurable action on ocean restoration, relevant to companies seeking credible local partnerships for their nature-based ESG commitments.
Biography highlights
- Co-founder and President, Oceans2050 – lead organisation behind the first peer-reviewed global study of seaweed carbon sequestration, published in Nature Climate Change (2025), with research funding from WWF and the Bezos Earth Fund
- National Geographic Emerging Explorer (2008); World Economic Forum Young Global Leader (2010)
- Co-founder, EarthEcho International – youth environmental education organisation reaching more than 2 million people in 146 countries
- Founder, Blue Legacy International (2008) – produced 100+ award-winning short films on water issues, with expeditions across six continents
- Honorary Doctor of Humane Letters, Georgetown University (2016); BA in Political Science (International Relations), Georgetown University
- Senior Advisor, Oceana; CNN Principle Voices contributor (2008); UN Earth Trustee; U.S. Congress water policy witness
Biography
The ocean absorbs roughly a quarter of all carbon emitted since industrialisation, yet it remains largely absent from corporate ESG strategy. Alexandra Cousteau, co-founder of Oceans2050 and granddaughter of the legendary oceanographer Jacques-Yves Cousteau, has spent two decades building the scientific infrastructure to address that gap. The Oceans2050 study published in Nature Climate Change in 2025 was the first peer-reviewed global assessment of carbon burial beneath seaweed farms, demonstrating sequestration rates comparable to mangroves and seagrasses and establishing the scientific foundation for a new blue carbon market.
Cousteau’s consistent argument, advanced across her work with EarthEcho International, Blue Legacy, and Oceans2050, is that water security is not a separate environmental concern but a material business risk embedded in every supply chain, food system, and coastal community. This is grounded in fieldwork across six continents, peer-reviewed science, and direct engagement with heads of state, NGOs, and senior policy makers. She has testified before the U.S. Congress on water policy and served for years as Senior Advisor to Oceana on ocean conservation and governance campaigns.
Her credentials span the academic and the field-based. She holds a degree in International Relations from Georgetown University and received an honorary doctorate from the same institution in 2016. National Geographic named her an Emerging Explorer in 2008; the World Economic Forum recognised her as a Young Global Leader in 2010. She co-founded EarthEcho International, now reaching more than 2 million young people in 146 countries, and established Blue Legacy International in 2008, producing over 100 award-winning films on freshwater and ocean issues.
The case she makes to organisations is specific: ocean restoration is market infrastructure. As architect of the Blue Cities Alliance and the Oceans2050 seaweed carbon project, she is building the verified frameworks that enable corporate investment in blue carbon at scale. Boards evaluating ESG commitments increasingly need to distinguish credible ocean science from reputational positioning. Cousteau provides that distinction with the rigour to back it up.
Key speaking topics
- Ocean restoration and blue carbon markets
- Water security as material business risk
- ESG strategy and nature-based climate solutions
- Blue economy and sustainable aquaculture
- Science-based storytelling and public engagement
- Long-term environmental thinking and intergenerational leadership
- Ocean policy and governance
Ideal for
- Chief Sustainability Officers and ESG leadership teams evaluating nature-based and ocean-based climate commitments
- Corporate boards and senior executives with water or coastal supply chain exposure in their risk frameworks
- Policy forums, international summits, and governmental bodies focused on ocean governance, climate action, and blue economy development
- Investment and financial audiences engaging with emerging blue carbon and voluntary carbon market opportunities
Audience outcomes
- A clearer framework for distinguishing science-backed ocean and water climate solutions from greenwashing, directly applicable to ESG due diligence and investor reporting
- A systems-level understanding of how water security – from freshwater access to ocean health – connects to supply chain risk, food production, and community resilience
- Awareness of blue carbon markets as an emerging investment and risk management tool, including the peer-reviewed science behind seaweed farming as a carbon sequestration mechanism
- A reframing of ocean ESG commitments from reputation management to material strategic risk, with evidence-based criteria for evaluating corporate action
- Practical insight into what responsible, evidence-based corporate engagement with ocean conservation looks like, drawn from Oceans2050’s work with WWF, the Bezos Earth Fund, and global seaweed farming communities
Talks
A systems-based case for why ocean and water health are material business and policy priorities, grounded in peer-reviewed science and expedition-based evidence from six continents.
Key takeaways:
- Why water security – from freshwater systems to ocean abundance – is embedded in supply chains, food production, and community resilience in ways that create direct business exposure
- How seaweed farming and ocean restoration are developing as credible, science-backed climate solutions with verified carbon sequestration potential, and what this means for corporate ESG investment
- A practical framework for distinguishing credible nature-based ocean commitments from greenwashing, applicable to board-level ESG evaluation
A leadership argument drawing on the Cousteau family’s three-generation legacy of exploration, framing curiosity, direct engagement with evidence, and active participation as essential qualities for organisations navigating complex environments.
Key takeaways:
- How the explorer mindset – sustained curiosity, tolerance for uncertainty, and willingness to act on direct evidence – translates into contemporary organisational leadership practice
- Why Blue Legacy’s pioneering use of real-time social media storytelling reshaped how conservation organisations engage institutional and public audiences, and what this means for corporate communications strategy
- How personal experience and direct observation build deeper conviction and more durable leadership than data or strategy alone
A candid personal account of navigating leadership, public advocacy, and family life simultaneously, offering a direct perspective on the pressures and possibilities facing women in senior roles.
Key takeaways:
- The specific structural and cultural pressures women face balancing leadership careers with family life, and what genuinely makes a difference
- How personal narrative and authentic storytelling can be used to mobilise action on complex public issues, drawing on decades of film-making and expedition communication
- Why purpose-driven, long-term thinking rooted in genuine conviction produces more durable leadership than conventional career strategy