Episodes

Great white shark DNA is one of the most puzzling mysteries in marine biology. Recent research has revealed that despite being one species, great whites have split into three distinct genetic groups across the globe. What’s even stranger: their nuclear DNA and mitochondrial DNA tell conflicting stories, leaving scientists scratching their heads. Shark philopatry—the tendency of females to return to their birthplace to give birth—adds another layer to this mystery. While philopatry has been well...

Advocacy for scientists is a skill that can transform how research impacts the real world. In this episode of How to Protect the Ocean, host Andrew Lewin reflects on an article by Melissa Varga from the Union of Concerned Scientists that encourages scientists to step into advocacy roles. Andrew shares why many researchers hesitate to speak out, the cultural challenges within academia, and how advocacy can be integrated into a science career without sacrificing credibility. Ocean conservation al...

Sustainable fashion is more than a trend, it is a movement that connects what we wear to the health of our planet. In this episode, Andrew Lewin speaks with Courtney Barriger, CEO of Holding Court Inc., about how clothing design can reduce waste, prevent microplastic pollution, and empower people to make responsible choices. The discussion reveals the hidden costs of fast fashion, from synthetic fibers shedding microplastics into waterways to the massive environmental toll of textile waste. Oce...

Terracycle is proving that almost anything can be recycled, from cigarette butts to ocean plastics, transforming how the world thinks about waste. In this episode of How to Protect the Ocean, Andrew Lewin speaks with Tom Szaky, the founder and CEO of TerraCycle, to explore how his company is creating global recycling programs that redefine sustainability and consumer responsibility. TerraCycle has become a leader in connecting corporations and individuals to solutions that keep waste out of lan...

Shark Meat Fed To Students in Brazil’s public institutions has sparked outrage after Mongabay uncovered thousands of tons of mislabeled shark meat, including endangered species like angelsharks, being served in schools, hospitals, prisons, and elderly care centers. Labeled as “cação” or “angel fish,” these meals were consumed by thousands of unsuspecting Brazilians, raising urgent concerns for both public health and ocean conservation. Shark meat in Brazil carries dangerous risks due to high le...

Oceana, working to protect endangered species, is at the heart of this powerful episode featuring Tara Brock, an environmental lawyer advocating for ocean life. Tara unpacks how the Endangered Species Act is used to protect humpback whales and sea turtles, and how legal tools like this remain essential to ocean conservation. As threats like ship strikes, climate change, and bycatch continue to rise, Tara explains why this legislation is still one of the strongest protections we have—and how it’s...

Starting an environmental nonprofit often begins with a vision and the determination to make a difference, but it also comes with challenges in funding, community support, and long-term sustainability. In this episode of How to Protect the Ocean, Bart Oor and Sander Brienen share the story of how they created Balean, a platform designed to help independent projects and nonprofits access the support they need to thrive. Independent changemakers are reshaping how conservation work is done. Bart a...

Pacific Islands Heritage Marine National Monument: For over a decade, these waters stood as one of the largest no-take zones on Earth, safeguarding corals, fish, and migratory species. But on day one of his presidency, Donald Trump erased the U.S. commitment to 30x30 and soon after issued Proclamation 10918, opening parts of the monument to commercial fishing. Marine conservation at risk: The rollback sparked lawsuits and reignited the debate over whether U.S. marine protections are too vulnera...

Less than 400 left — that’s how many North Atlantic right whales remain in the world. These critically endangered whales are at the center of an urgent conservation story, but how the media communicates about them plays a powerful role in shaping public awareness and action. In this episode of How to Protect the Ocean, Andrew Lewin sits down with Dr. Marcus Reamer, a new PhD graduate in science communication, to explore how newspapers and digital outlets covered right whale crises over the past ...

Managing fishing vessels goes far beyond tracking where a boat is registered. In this episode, we dive into Oceana’s Beyond the Flag report to explore how large-scale fishing vessels are often flagged in one country but owned in another, creating dangerous loopholes that allow illegal, unreported, and unregulated (IUU) fishing to thrive. This legal and beneficial ownership opacity undermines ocean governance, drains resources from coastal nations, and hides the true power behind global fishing o...

Plastic pollution in the ocean is no longer just an environmental issue—it’s a public health crisis and an economic threat. In this episode, I break down the latest updates from the UN negotiations on a global plastics treaty, explaining why the talks in Geneva this month could set the course for the next generation’s relationship with plastic. From production caps to industry lobbying, the fight over how to address the problem is as intense as ever. Plastic pollution in the ocean also raises q...

How 5 billion sea stars died is a story that shook marine ecosystems along North America’s Pacific coast. This episode dives into the groundbreaking discovery of the bacterium Vibrio pectenicida, the pathogen responsible for sea star wasting disease, which decimated up to 90% of sunflower sea stars. We explore how the loss of these predators caused sea urchin populations to explode, leading to widespread kelp forest destruction, and what new recovery strategies—such as captive breeding, probioti...

Scientist Identifies New Manta Ray Species—the Atlantic Manta Ray, Mobula yarae—in a groundbreaking announcement from Dr. Andrea Marshall and her team at the Marine Megafauna Foundation. In this episode, Andrew Lewin shares the story of how Dr. Marshall, already renowned for identifying two distinct manta species in 2009, confirmed a long-suspected third species after years of meticulous observation, genetic analysis, and global collaboration. Listen to this remarkable story of how this new spe...

Climate Crisis and Capitalism are at the heart of David Suzuki’s powerful message in this episode. In a candid and impassioned reflection, Suzuki warns that if we continue to prioritize politics and the economy over protecting the environment, we may as well give up on climate action. He challenges the cultural obsession with perpetual economic growth, critiques the short-sightedness of political cycles, and urges a fundamental shift in our collective priorities. David Suzuki’s call for transfo...

Map the Deep Sea to protect what we don’t yet understand. In this episode, Andrew Lewin speaks with Tim Kearns from Map the Gaps, a global initiative working to close the knowledge gap beneath the waves. With over 75% of the seafloor still unmapped in high resolution, the ocean remains Earth’s final frontier—and unlocking its secrets is essential for biodiversity, disaster planning, and climate action. Ocean mapping is more than bathymetry. It’s a tool for social justice, environmental stewards...

Ocean Books can do more than entertain—they can inspire action, hope, and a fresh way of thinking about climate change. In this episode, Todd Medema introduces his new novel, How to Surf a Hurricane, a solarpunk heist that imagines a near-future world adapting to climate change. Todd and Andrew Lewin explore how fiction can shift the narrative from doom to determination, showing how communities can come together to protect nature and build a better future. Solarpunk climate fiction takes center...

Coffee and the environment are deeply intertwined, yet few consumers realize just how damaging the coffee industry can be. In this episode, Etelle Higonnet, a Yale-trained human rights lawyer and founder of Coffee Watch, joins Andrew to explore the environmental and human rights crises associated with global coffee production. From deforestation and toxic chemical use to plastic waste and ocean pollution, Etelle reveals the harsh truths behind one of the world’s most beloved beverages. Coffee c...

Plastic foam pollution continues to be a widespread and dangerous threat to ocean health. In this episode of How to Protect the Ocean, Oceana’s Christy Leavitt breaks down their 2025 report exposing the true environmental cost of expanded polystyrene foam (EPS) used in foodware across the US. With shocking statistics and real-life examples, Christy explains how foam harms marine ecosystems, why it’s rarely recycled, and how local and national bans are gaining momentum. Plastic pollution solutio...

Shark Week 2025 opened with a spectacle that left many conservationists and shark advocates frustrated. The premiere episode, Dancing With Sharks, featured handlers hugging, hand-feeding, and even riding sharks—behaviors that distort shark biology and promote a dangerous misunderstanding of these wild animals. In this episode, we examine how the use of tonic immobility and forced interactions undermines shark conservation and sends the wrong message to the public. Shark conservation deserves be...

How to Protect Sharks isn’t just about banning shark finning or posting awareness videos. It’s about understanding what really works—supporting science-based policies, enforcing marine protected areas, backing local researchers, and stopping the spread of misinformation. In this episode, we clear up the confusion around shark conservation and focus on the actions that actually make a difference. Shark conservation efforts must move beyond clickbait and into impact. From choosing ethical shark t...

How Marine Conservation Works is the foundation for protecting our oceans, but it’s often misunderstood. In this episode, we break down how marine conservation really happens—from grassroots community efforts and local fisheries management to scientific input and national policies. You’ll learn why effective conservation requires more than just good intentions—it takes collaboration, long-term planning, and strong social and political support. Join the Undertow: https://www.speakupforblue.com/j...

Texas Flood 2025 revealed just how urgently we need smarter tools in disaster response. In this episode, Dave Jones, founder of StormCenter Communications, explains how his team used satellite imagery and real-time mapping to support emergency responders during the catastrophic floods. Their data helped identify stranded residents, blocked roads, and the areas most in need—turning science into life-saving action. Satellite technology for disaster response is revolutionizing real-time crisis man...

Conservation is about collaboration, and collaboration is what we are discussing today. Ocean collaboration is at the heart of many conservation success stories, but what happens when it breaks down? In this episode of the How to Protect the Ocean podcast, host Andrew Lewin talks with Bart Orr, the founder of Balean, a platform created to support independent ocean conservationists by giving them the funding, structure, and digital tools to succeed. They dive into the barriers many changemakers ...

Orca Allokelping is the newly documented behavior where southern resident killer whales use bull kelp as a tool to rub against each other—possibly to remove dead skin and soothe irritation. Captured via drone, this social spa-like behavior, known as allokelping, reveals a rare example of cooperative tool use in the wild. Scientists believe it serves both physical and social functions, strengthening bonds within pods and supporting skin health. Kelp grooming is more than just orca hygiene. It hi...