Fish feed in aquaculture is at the center of a complicated global story that most people never hear about. In this episode, Andrew sits down with marine biologist and policy expert Marine Cusa to explore the hidden world of fishmeal, fish oil, feed ingredients, and the surprising connections between aquaculture, wild fisheries, West African communities, and even penguin populations in Antarctica. Marine breaks down what actually goes into the pellets fed to farmed fish, why transparency is lacking in the supply chain, and how her genetics research is uncovering the real species being used in fish feed. The conversation reveals why feed matters for sustainability, human nutrition, local livelihoods, and the future of aquaculture as demand for seafood continues to grow. Whether you're new to the topic or already deep in fisheries science, this episode opens the door to a critical but overlooked part of marine conservation. Help fund a new seagrass podcast: https://www.speakupforblue.com/seagrass Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Orcas vs Great White Sharks is more than a dramatic headline—it's a sign of how ocean ecosystems are shifting before our eyes. New drone footage shows orcas in the Gulf of California attacking and killing juvenile great white sharks in what scientists believe are nursery zones. The footage, captured in 2020 and 2022, reveals orcas flipping young sharks onto their backs, inducing tonic immobility, and surgically removing their livers—a precise and efficient hunting technique that may reshape predator-prey dynamics. For years, scientists have known about great white shark nurseries, but what defines a "true nursery" has always been debated. These new observations raise deeper questions: Are orcas expanding their hunting grounds, or are juvenile sharks moving into new, warmer waters due to climate change? If orcas continue targeting young sharks, could this affect the recovery and stability of great white populations across the Pacific? In this episode, Andrew explores the science, the controversy, and what these interactions mean for the future of ocean conservation. Help me podcast for a purpose and fund a podcast that discusses seagrass science, conservation, and restoration by funding here: https://www.speakupforblue.com/seagrass . Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Seagrass meadows are among the most vital yet overlooked ecosystems on our planet. In this episode of How to Protect the Ocean , Andrew Lewin explores a new 19-year study from Moreton Bay, Australia, which shows that seagrass coverage and diversity are declining over time despite short-term recovery periods. This long-term research reveals that while short-term studies might show seagrass bouncing back after storms or floods, the bigger picture tells a story of gradual loss and ecological transformation. The episode also highlights why this decline matters: seagrass meadows are nurseries for fish, homes for turtles and dugongs, and major carbon sinks that help buffer climate impacts. Andrew connects the findings to global conservation lessons and introduces The Seagrass Effect, a new project and podcast dedicated to sharing research, restoration stories, and action opportunities for protecting seagrass ecosystems worldwide. Do you want more seagrass content? Help Fund the Seagrass Effect Podcast: https://www.speakupforblue.com/seagrass Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Animals affected by climate change are showing us how fragile our ecosystems have become. In this episode of How to Protect the Ocean , host Andrew Lewin speaks with Dr. Helen Killeen, a marine ecologist whose research connects seabird reproduction to shifting ocean temperatures, prey diversity, and climate pressures across the northern hemisphere. Animals affected by climate change, from seabirds in the Arctic to those in the Pacific, serve as living indicators of ocean health. Helen explains how changes in prey diversity and warming oceans disrupt seabird breeding success, what this means for food webs, and why protecting biodiversity can help stabilize marine ecosystems. She also shares her journey from high-school science teacher to marine researcher, revealing how curiosity and adaptability are essential traits for anyone working to protect our planet. Link to study: https://www.nature.com/articles/s43247-025-02717-z Link to Farallone Institute: https://www.faralloninstitute.org/ Link to seabird page: https://seabirds.faralloninstitute.org/ Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Marine Conservation Projects are driving real wins: green sea turtles downgraded to least concern in many regions, North Atlantic right whales showing a small but meaningful uptick, and a new vaquita calf sighting offering hope. In this episode I explain the common thread behind these stories, targeted local projects, science monitoring, and laws that actually get enforced, and I share practical ways you can support the people doing the work. From night patrols that protect turtle nests to whale disentanglement teams and community programs in Mexico that replace gillnets, you will hear how volunteers, NGOs, scientists, and agencies are collaborating. I also share simple options for listeners, micro-donations, monthly support for field teams and students, and amplifying calls to action, so your contribution compounds over time. Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Bill Gates and Climate Change have become a trending topic after the billionaire philanthropist argued that the world is too focused on cutting carbon emissions and not focused enough on improving human welfare. In this episode, I unpack what Gates said, why it caused such a reaction, and how his argument connects to decades of work in climate justice and climate equity. Many climate justice organizations have long emphasized that people struggling with hunger, illness, or poverty cannot prioritize environmental action until their basic needs are met. Gates's claim—that people fighting to survive won't care about climate change—has reignited a long-standing debate: should the global focus be on saving people now or saving the planet long-term? I explore what this means for climate policy, philanthropy, and how we communicate solutions for ocean and human health together. You'll also hear how these conversations tie back to ocean conservation, coastal communities, and the delicate balance between adaptation, mitigation, and justice. Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

North Atlantic right whales have been teetering on the edge of extinction for decades, with fewer than 400 individuals left. But recent reports hint at a small sign of hope: the population may finally be stabilizing, or even slightly increasing. In this episode, Andrew Lewin explores what that really means. Conservation efforts, from slower ship speeds to ropeless fishing gear, are starting to make a difference—but are they enough to ensure these whales survive? Andrew breaks down the latest science, the hard numbers from NOAA's newest technical memo, and why every calf, especially every female calf, matters for the species' future. This episode balances realism and optimism, showing how policy, technology, and human compassion can still change the course for one of the ocean's most endangered giants. Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Art and Ocean Science are merging in ways that bring new life to marine research and conservation. In this episode of How to Protect the Ocean , host Andrew Lewin speaks with the creative minds behind Ocean Networks Canada's "Surfacing Secrets" project, a groundbreaking collaboration where sculptors, theatre directors, and scientists explore how art can help people see, feel, and understand the ocean in fresh ways. Ocean creativity takes center stage as guests share how sculpture can represent underwater sounds, theatre can transform data into emotion, and how cross-disciplinary partnerships bridge the gap between research and public engagement. This powerful exchange between artists and scientists reveals how creative storytelling can inspire empathy, foster curiosity, and spark action for the ocean. Ocean connection drives every part of this episode, reminding us that art isn't just a reflection of science, it's a vital part of understanding our planet's most mysterious realm, the deep sea. Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Nova Scotia Whale Sanctuary has officially received provincial approval, marking a monumental step toward creating Canada's first ocean refuge for retired whales. In this episode of How to Protect the Ocean , Andrew Lewin explains how this decision moves the Whale Sanctuary Project closer to reality, what challenges remain before the sanctuary opens, and why this could change the way the world cares for marine mammals. Andrew also dives into how the Whale Sanctuary Project built the foundation for this historic milestone through years of environmental assessment, scientific planning, and local engagement. He reflects on his own experiences as a marine biologist and communicator, sharing why the sanctuary represents more than just a safe haven for whales—it's a sign that humanity is learning to live in balance with the ocean once again. Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

AI and Water are more connected than most people realize. As artificial intelligence continues to expand, the data centres that power it are using millions of litres of water every day to stay cool. This invisible demand is creating ripple effects across our freshwater systems, and ultimately, our ocean. In this episode, Andrew Lewin uncovers how AI's explosive growth is reshaping global water use. From groundwater depletion and saltwater intrusion near coastal data hubs to desalination discharges harming marine life, the story goes far beyond servers and code. He breaks down how indirect energy use from AI contributes to ocean warming and acidification, revealing that every digital action has a hidden aquatic cost. Andrew also explores innovative solutions—from recycled and non-potable cooling systems to closed-loop designs that dramatically reduce water loss. With growing global demand for AI, he highlights the urgent need for transparency, accountability, and smarter policy design to protect both freshwater and marine environments. Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Green sea turtle conservation shows us what's possible when people, policy, and passion align. Once nearly wiped out by overharvesting and habitat loss, the green sea turtle has made an inspiring recovery after decades of global protection. In this episode, Andrew Lewin shares a deeply personal story of encountering a turtle nest in Florida with his daughters and reflects on how that moment connects to today's IUCN Red List update. But while the turtle story offers hope, the latest report warns of darker trends. Arctic seals like the harp, hooded, and bearded seals are now at greater risk as melting sea ice robs them of essential habitat, and 61 percent of the world's bird species are in decline due to deforestation, agriculture, invasive species, and climate change. Andrew breaks down how the balance between success and loss reveals both the fragility of nature and the power of sustained conservation. This episode isn't just about wildlife; it's about people choosing to act. Andrew explains how individual and collective choices—from voting and policy advocacy to supporting community-based conservation—can determine which species recover and which fade away. Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Coral reefs suffering from climate change are no longer a warning for the future, they are happening now. A landmark scientific report reveals that warm-water reefs have already passed a tipping threshold due to global heating, leading to widespread die-offs and threatening the biodiversity and coastal protection they provide. For the millions of people who depend on reefs for food and livelihoods, this is not just an ocean issue but a global crisis. Global heating is pushing other critical systems — from ice sheets to the Amazon rainforest to the Atlantic Ocean circulation — closer to collapse. The danger is not only ecological, but social and economic, with cascading impacts on communities worldwide. Yet the report also emphasizes the possibility of positive tipping points : rapid shifts in renewable energy, sustainable practices, and collective action that could steer us toward a safer future. In this episode, Andrew Lewin connects the science to lived experiences as a marine biologist and ocean communicator. He shares what these findings mean for the future of coral reefs, why every fraction of a degree of warming matters, and how each of us can contribute to turning the tide. Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Madagascar Environment is at the center of this engaging conversation with Dr. David Ebert, a world-renowned shark scientist and co-host of Beyond Jaws . In this episode, we uncover the unique challenges and opportunities that Madagascar's marine ecosystems face, from biodiversity conservation to the pressures of unsustainable fishing. Shark science takes on a new dimension as Dr. Ebert shares his experiences conducting fieldwork in Madagascar and how these insights contribute to our global understanding of marine species. This episode brings together conservation, local community needs, and international collaboration to highlight why Madagascar's environment plays a vital role in ocean health worldwide. Dave's YouTube Channel: https://www.youtube.com/@lostsharkguy Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Vaquita stands as one of the rarest marine mammals on Earth, with fewer than 20 left in the wild. In this episode, we explore what the near-extinction of the vaquita teaches us about the future of sharks and why their survival is critical to the health of the ocean. Sharks play an essential role in keeping marine ecosystems balanced, yet they face many of the same threats that doomed the vaquita: bycatch, overfishing, and weak enforcement. This episode dives into the parallels, the urgency of acting before it is too late, and how the loss of sharks would ripple into every part of our lives, from food security to coastal protection. Melissa Marquez's article in Forbes: https://www.forbes.com/sites/melissacristinamarquez/2025/09/30/what-the-vaquitas-fate-warns-about-sharks/ Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…

Marineland beluga whales remain at the center of a heated national debate after Canada's Department of Fisheries and Oceans denied the park's request to export 30 whales to a marine theme park in China. In this episode, Andrew Lewin explores the unfolding crisis, from the park's claims of financial hardship to the legal, ethical, and political questions surrounding the whales' future. Marineland beluga whales could face an uncertain fate as the park warns it may not be able to care for them, raising the specter of euthanasia. Andrew breaks down government responses, animal welfare group actions, and emerging relocation proposals including the Nova Scotia Whale Sanctuary Project and Inuit-led plans. This episode unpacks the clash between law, profit, and responsibility while asking the essential question: who should ensure the whales' welfare? Join the Undertow: https://www.speakupforblue.com/jointheundertow Connect with Speak Up For Blue Website: https://bit.ly/3fOF3Wf Instagram: https://bit.ly/3rIaJSG TikTok: https://www.tiktok.com/@speakupforblue Twitter: https://bit.ly/3rHZxpc YouTube: www.speakupforblue.com/youtube…