Episodes

French Polynesia marine protected area is now the largest in the world, covering nearly 4.8 million square kilometers of ocean. This groundbreaking conservation effort was announced during the United Nations Ocean Conference and includes large no-take zones near the Society and Gambier Islands, along with expansive areas that restrict harmful activities like deep-sea mining and bottom trawling. The MPA recognizes traditional fishing rights while also preserving critical marine habitats. Marine ...

The problem with seaweed aquaculture is that it’s not always as ocean-friendly as it seems. While seaweed farming is often praised as a climate solution—able to sequester carbon, improve water quality, and support sustainable food systems—scientists are now warning that its rapid, unregulated expansion could be damaging vital marine ecosystems. In this episode of How to Protect the Ocean, we dive into how seaweed farms are being placed over seagrass meadows, disrupting fish nurseries, smothering...

UNOC 2025 brought major headlines in ocean conservation—from billions pledged to protect biodiversity, to significant movement on the High Seas Treaty. In this episode, Andrew Lewin returns from the UN Ocean Conference in Nice, France, with a firsthand account of what was announced, what was promised, and what might actually happen. Ocean finance was a hot topic this year. Governments, development banks, and private investors pledged record-breaking funding to tackle everything from plastic pol...

Why Cayman Islanders Voted against a massive cruise ship pier is a rare and powerful story of reef protection over profit. In this episode of How to Protect the Ocean, Andrew Lewin unpacks the bold decision by Cayman citizens to reject a development project that would have severely damaged their coral reef ecosystem. The vote sent a clear message: the long-term health of the ocean matters more than short-term tourism dollars. Why Cayman Islanders Voted is also a reminder that grassroots action ...

Climate policy in the U.S. has taken a wild ride in recent years. In this episode of How to Protect the Ocean, I speak with Chris Moyer, founder of Echo Communication Advisors, about the turbulent shifts in federal policy—especially during the Trump and Biden administrations, and how these shifts have disrupted progress in renewable energy. We examine the implications of these changes for energy development, environmental protection, and the impact of public messaging on political will to act. ...

Oceans Day is more than a date on the calendar—it’s a moment to reflect on the state of our blue planet and our role in protecting it. In this heartfelt episode, Andrew Lewin shares a personal message for Oceans Day 2025 (and any day after), speaking directly to those who feel overwhelmed by climate anxiety and unsure of their place in ocean conservation. His reminder is clear: the problems may be big, but so is our potential to create change. Ocean conservation isn’t only for scientists or p...

Ocean Networks Canada (ONC) began as a bold idea—to create a real-time, always-on listening system for the ocean. In this episode, Surfacing Secrets: Mavericks and Visionaries , we go behind the scenes with the people who made that idea real. From laying cables deep in the Pacific to building trust with research institutions and government partners, this is the untold story of how a world-leading ocean observatory came to life. Our guests— Kate Moran (President and CEO of Ocean Networks Ca...

Ocean conservation is more than protecting ecosystems—it’s about empowering people to lead change. In this episode of How to Protect the Ocean , Andrew, Serena, and Amanda explore the WaveMaker identity, what it means to be part of a movement, and how The Undertow is creating a community where action and support go hand-in-hand. WaveMakers aren’t just scientists or campaigners—they’re everyday people standing up for the ocean. This episode is a behind-the-scenes look at the launch of The...

Ocean conservation is evolving—and The Undertow is leading the way by merging storytelling, technology, and community. In this episode, host Andrew Lewin is joined by Amanda Horn and Serena Nguyen to unveil The Undertow , a new platform designed to supercharge ocean action by connecting people from all backgrounds to meaningful environmental impact. Innovation lies at the heart of The Undertow’s mission: to create 10 million new ocean connections and unlock $5 million in tangible ocean ac...

Prevent overfishing by making the invisible visible. In this episode, Courtney Farthing from Global Fishing Watch explains how vessel tracking and open data systems are key to protecting marine life and holding industrial fisheries accountable. With over 75% of industrial fishing vessels missing from public monitoring systems, it’s time to shine a light on what’s happening at sea. Global Fishing Watch is leading the charge to prevent overfishing through transparency—making vessel locations, id...

Ocean recovery is not just possible, it’s already happening in places where we’ve taken action. In this episode, I dive into Ocean with David Attenborough , a documentary that reminds us of the ocean’s incredible resilience. From thriving coral reefs to fish populations bouncing back, the film offers powerful proof that when we give marine ecosystems space and protection, they can heal faster than we think. It’s a rare example of ocean storytelling that balances urgency with genuine optimism....

Tide gauges are a critical yet often overlooked tool in our fight to understand and respond to climate change. In this episode, Dr. Andrew Thaler returns to the podcast to share a powerful story about installing a tide gauge in his hometown of St. Michaels, Maryland. He breaks down how this simple device provides crucial data for flood risk, sea level rise, and community resilience, bringing science closer to home. Community science is at the heart of Dr. Thaler’s work. We explore how grassro...

Harmful algal blooms are wreaking havoc along the California coast, releasing toxic domoic acid that is poisoning marine life. In this episode, we explore how this naturally occurring toxin is causing mass die-offs in sea lions, dolphins, and seabirds , and why climate change and nutrient pollution may be making these blooms worse. You’ll hear about the science behind domoic acid, its neurological effects on animals, and how it mimics epilepsy symptoms in marine mammals. Domoic acid poisonin...

Ocean conservation isn’t always about what’s happening in the water—it’s also about the choices we make on land. In this episode, we speak with Maddie Hamann, a former oceanographer turned sustainable food entrepreneur. Maddie shares how her background in ocean science led her to co-found PACHA , a company that creates sourdough buckwheat bread using organic, regenerative practices. From nutrient cycles to sustainable packaging, Maddie explains how oceanography continues to inform her mission—...

Plastic pollution in the Maldives has become a serious environmental crisis, despite the nation’s image as a pristine paradise. In this episode of How to Protect the Ocean , host Andrew Lewin shares the inspiring story of Zazou Saeed—a young Maldivian surfer and ocean advocate—who rose to become a local conservation hero by campaigning against single-use plastics. From leading beach cleanups to working with NGOs like Save the Beach and Parley for the Oceans, Zazou sparked a grassroots movement...

Orca conservation takes center stage as we highlight an inspiring community-led effort to protect these iconic marine mammals. Andrew explores how nearshore ocean heroes are driving real change, and why their stories matter more than ever. Learn how protecting your local waters can lead to healthier oceans worldwide—and why it’s time we recognize those leading the charge. Shark encounters on social media spark a deeper discussion on wildlife ethics, as Andrew reacts to a TikTok video that demon...

Nearshore conservation is often overlooked in favor of flashy offshore marine protected areas. But a growing movement of community-led initiatives is showing that protecting coastal waters might be one of the smartest, most effective ways to safeguard ocean biodiversity and build climate resilience. This episode explores new insights from the Nearshore Ocean Progress report by the Center for American Progress, which highlights successful local conservation efforts across the U.S. Community-dr...

Gray whales are dying along the Pacific coast—and the reasons are alarming. In this episode, we dive into why hundreds of gray whales have stranded or died between 2019 and 2023. From food shortages in their Arctic feeding grounds to the rising risks of ship strikes and entanglement in fishing gear, we break down what NOAA has called an Unusual Mortality Event (UME) and how climate change is accelerating the crisis. We also explore recent signs of population recovery and what it means for the f...

Endangered species protection in Ontario is under threat as the provincial government proposes Bill 5, repealing the Endangered Species Act in favor of weaker legislation. Host Andrew Lewin breaks down what these changes mean for biodiversity, habitat...

Deep sea mining in the U.S. is entering a new chapter after a recent executive order signed by former President Donald Trump authorized exploration and extraction not only in U.S. Exclusive Economic Zones but potentially in international waters. This...

Coral bleaching is not just a temporary event—it’s a climate emergency that can unfold over years. In this episode of How to Protect the Ocean, host Andrew Lewin dives deep into the devastating history of global coral bleaching events, revealing...

Octopus intelligence is nothing short of extraordinary—and in this episode, we dive deep with award-winning author Mark Leiren-Young to explore the surprising minds, behaviors, and conservation challenges of one of the ocean’s most elusive...

Energy policy shifts in the U.S. are sparking concern as the government rolls back environmental regulations to fast-track oil and gas drilling. In this episode, we examine how these rollbacks could jeopardize ecosystems, especially marine...

Equity, Diversity, and Inclusion (EDI) have become integral components of Canadian science funding. In this episode, we explore Pierre Poilievre's plan to strip funding from research programs that incorporate so-called "woke" policies like EDI. We...