Whales don't get cancer as often as you might expect, and in this episode you learn how the bowhead whale's unique DNA repair system is helping scientists understand cancer prevention and healthy aging. This Arctic giant lives more than 200 years, grows to airplane size, and still avoids the runaway mutation patterns that lead to tumors in other species.

Whales don't get cancer at high rates because their cells repair DNA damage with remarkable accuracy, and recent studies show that bowhead whales have powerful repair proteins like CIRBP that might someday guide cancer research. You will hear how this repair strategy works, why it matters for humans, and why protecting long-lived marine mammals also protects the scientific insights they carry.

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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.

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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.

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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.

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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/

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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.

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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.

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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.

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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.

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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.

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