Episodes

Conferences can feel intimidating, expensive, and overwhelming, especially if networking doesn't come naturally to you. In this episode, Andrew shares what more than a decade of attending marine science and conservation conferences has taught him about making real connections, from picking the right event for your career stage to crafting an elevator pitch that actually works. Andrew walks through how to choose a conference that fits your specific field, why in-person events build stronger prof...

Marineland Canada is officially closing, and this week the park began moving its remaining beluga whales out of Niagara Falls. Six belugas were flown out on a single flight this week, four to the Shedd Aquarium in Chicago and two to SeaWorld San Antonio, marking the start of a rescue effort that has been years in the making. Andrew walks through how the park got here, from its 1961 founding through decades of protests, whistleblower allegations, OSPCA charges, and a failed 2025 attempt to export...

The US government is moving toward the world's first commercial deep-sea mining lease sale, and it's happening in federal waters off American Samoa. In this episode, Andrew breaks down how we got here: a California startup's 2025 request to mine polymetallic nodules, the Request for Information process that followed, and the 75,000-plus public comments that came in during the 30-day comment window, with 80 to 98% opposed to mining. Despite that opposition, and despite a standing moratorium from ...

A viral TikTok about fish aggregation devices drifting into marine protected areas got Andrew thinking about a topic he hasn't covered in a while: ghost nets. In this episode, he breaks down what ghost nets actually are, the scientific term for them (ALDFG, or abandoned, lost, or otherwise discarded fishing gear), and why they're a growing, well-documented problem from the ocean surface all the way down to the deep seafloor. Andrew walks through what the peer-reviewed research shows: entangleme...

For a week straight, Andrew watched his own sky turn orange outside Toronto as smoke from nearly 900 wildfires burning across Canada, most of them following the boreal forest from the east coast to Northwestern Ontario, drifted south into the US and back again. He walks through what actually happened on the ground: which towns and First Nations were evacuated, how bad the air quality got (Toronto briefly had the worst AQI in the world), and why northwestern Ontario, not a hugely populated area b...

If you've ever felt a hard strike, fought a fish, and reeled up nothing but a head, you already know what shark depredation feels like. In this episode, Andrew breaks down a new study that tracked shark depredation across the entire Atlantic coast, from Maine to Texas and the US Caribbean, going back a full century to figure out why it's happening more now than ever before. The study found at least 51 targeted fish stocks affected and 22 shark species involved, with bull sharks and sandbar sh...

A thousand meters down off the coast of Brazil, a deep-sea robot caught something almost no one has ever filmed alive: a giant open ocean octopus calmly eating a jellyfish. That moment, captured by the Schmidt Ocean Institute's ROV SuBastian aboard the research vessel Falkor (too), was part of a wider expedition that turned up more than two dozen species new to science, from glowing worms to glass squid to strange colonial siphonophores. The discovery points to something bigger than one exped...

In 1978, an Exxon scientist asked a question in capital letters: were the oceans dissolving coral reefs? By 1982, Exxon's own scientists had the answer, in writing. So did Shell by 1986. This episode traces a newly published Oxford University study that dug through more than fourteen thousand pages of fossil fuel industry documents and found that the world's biggest oil and gas companies understood, decades before the public did, exactly how their product would wreck coral reefs. We walk throug...

For more than a decade, almost 2,000 volunteers have walked California's beaches with clipboards, counting every swimmer, surfer, angler, and boat they see. It sounds simple, maybe even a little strange. But that pile of data, more than a million tally marks collected between 2012 and 2020, just answered a question marine scientists have debated for years: do marine protected areas actually work in the real world, not just on paper? In this episode, we walk through what researchers found when t...

Right now, somewhere in the open ocean, a raft the size of a small table is drifting with no one steering it. It's called a fish aggregating device, or FAD, and the tuna industry drops thousands of them into the water every year to lure fish to the surface. A new study published in Science Advances tracked where these rafts actually end up, and the answer is unsettling: they've likely drifted through more than half of the world's marine protected areas by total area, with over 6,300 strandings r...

Scientists have uncovered an incredible secret hiding in plain sight on coral reefs. Some tropical sea sponges are able to harvest sunlight through microscopic algae living inside their tissues, giving them a surprising source of energy. It is a discovery that challenges what we thought we knew about one of the ocean’s oldest animals. In this episode, we explore how these ancient filter feeders use a partnership with algae to survive and thrive in nutrient-poor tropical waters. You’ll learn why...

Sea level rise isn’t always dramatic. Long before homes disappear beneath the waves, coastal communities can lose something even more essential: safe drinking water. In this episode, we explore how saltwater is quietly moving into freshwater supplies across coastal Bangladesh and why this hidden impact deserves far more attention. Using a recent Mongabay commentary as a starting point, you’ll learn how rising seas, changing rivers, and human activities are combining to reshape one of the world’...

The world just pledged more than $6.4 billion for ocean conservation at the 2026 Our Ocean Conference, but history tells us that big announcements do not always lead to meaningful action. In this episode, we unpack what was actually announced, who made the commitments, and why the headline number is only part of the story. You’ll learn why this year’s conference in Kenya was especially significant and what makes these commitments different from legally binding agreements. We also explore the qu...

Thousands of seabirds are washing ashore along California’s coast, starving, exhausted, and unable to find enough food. While the images are heartbreaking, scientists say the birds are only the visible symptom of a much larger problem unfolding beneath the surface. In this episode, we explore why seabirds are dying and what their struggle reveals about the health of the Pacific Ocean. You’ll learn how marine heat waves are disrupting one of the world’s most productive ocean ecosystems by reduci...

Canada has admitted it is no longer on track to meet its 2030 climate targets, but the reasons go far beyond domestic politics. In this episode, we explore how changing economic priorities are reshaping Canada’s approach to climate action. The surprising twist is that many of these changes begin outside Canada’s borders. New U.S. tariffs and shifting trade policies are putting pressure on Canada’s economy, forcing leaders to rethink where to invest and what to prioritize. As economic policy cha...

Most of us will never visit the deep ocean, yet it covers the majority of our planet and supports life in ways we’re only beginning to understand. In this episode, Andrew Lewin wraps up the Surfacing Secrets series with Ocean Networks Canada by exploring why the deep sea remains one of Earth’s greatest frontiers. You’ll discover how scientists are uncovering hidden ecosystems that could reshape our understanding of the ocean. Andrew is joined by Monica Peltz of Ocean Networks Canada and Heidi G...

How do you protect something you barely understand? In this episode, we explore why ocean exploration is much more than discovering strange creatures or mapping the seafloor. Every marine protected area, conservation plan, and fisheries decision begins with one essential ingredient: knowledge. You’ll discover how scientists collect the information that guides conservation, from mapping underwater canyons to identifying coral gardens and sponge reefs that most people will never see. We also look...

The deep ocean is one of the most extreme places on Earth. Crushing pressure, freezing temperatures, and total darkness make it impossible for humans to explore for long, yet scientists continue to make incredible discoveries thousands of meters below the surface. So how do they do it? In this episode, you’ll discover the remarkable technology that makes deep sea exploration possible. From remotely operated vehicles and autonomous underwater robots to multibeam sonar, artificial intelligence, a...

Most people picture the deep sea as a dark, empty place where almost nothing can survive. The truth is far more surprising. Thousands of meters below the surface lives an extraordinary world filled with ancient corals, giant sponges, glowing jellyfish, strange fish, and species that scientists are still discovering today. In this episode, you’ll learn how life has adapted to crushing pressure, freezing temperatures, and complete darkness. You’ll also discover why deep-sea ecosystems are some of...

How can we know more about the Moon and Mars than the bottom of our own ocean? It sounds impossible, but it is true. In this episode, we begin a special series on deep ocean exploration by uncovering why so much of our planet remains a mystery and why that matters more than ever. The deep ocean plays a critical role in regulating Earth’s climate, supporting marine life, and helping sustain the ecosystems we depend on every day. Yet scientists have only explored a tiny fraction of it because of ...

What happens to marine conservation when a humanitarian crisis unfolds? In this episode of How to Protect the Ocean, we explore the remarkable story of marine scientist Mohammed Abu Daya, whose work studying endangered giant devil rays has continued despite the immense challenges of living and working in Gaza. His story reminds us that conservation is ultimately about people as much as it is about wildlife. You’ll learn why giant devil rays are among the Mediterranean’s most vulnerable species,...

For years, mangrove forests were seen as one of the world’s fastest disappearing coastal ecosystems. Cleared for development, shrimp farming, and agriculture, these unique forests seemed locked in a steady decline. But a new global study tells a much more hopeful story. Researchers have found that mangroves are recovering in many parts of the world, offering one of the most encouraging conservation success stories in recent years. In this episode, I break down why mangroves are so important for...

A potential super El Niño is developing in the Pacific Ocean, and scientists are warning that it could have major consequences for marine ecosystems around the world. While El Niño is a natural climate pattern, stronger events can dramatically alter ocean conditions by warming surface waters and reducing the nutrients that support marine food webs. In this episode, we explore why researchers are watching this event so closely and what it could mean for the future of the ocean. One of the bigges...

After 11 years of hosting How to Protect the Ocean, I wanted to take a step back and reflect on what the journey has taught me. What started as a simple passion project became a platform for ocean storytelling, science communication, and career development. Along the way, I learned lessons about persistence, networking, and creating opportunities that I never could have predicted when I published the first episode. One of the biggest takeaways is that building a career in marine science and con...