Episodes

Seamounts are underwater mountains that rise at least 1,000 meters from the seafloor without breaking the surface, and they punch far above their weight biologically. Topographic upwelling pulls cold, nutrient-rich water up their slopes, fueling plankton blooms that draw fish, sharks, seabirds, and marine mammals, while their rocky surfaces give slow-growing corals and sponges a rare hard place to root in an otherwise soft-sediment deep sea. Roughly one in five seamount species are endemic, foun...

Before he ever sat across a table from UN delegates, Matthew Gianni spent 10 years working as a commercial fisherman up and down both US coasts. Gillnetting for Spanish and king mackerel in Florida. Bottom trawling off central California, New England, and Florida for sole, redfish, hake, sablefish, shrimp, and other groundfish. Hook-and-lining for salmon and albacore tuna in Oregon and California. Running pots for Dungeness crab and dredging for deep sea scallops on Georges Bank. In today's epis...

Science communication has a blind spot: it keeps putting the same faces in front of the microphone. In this episode, Andrew talks with Amy Weldon, host and executive producer of the podcast Blue Collar White Coat, about why she built an entire show around the people science coverage usually skips. Amy spent 15 years in science communications, starting at the National Aquarium in Baltimore, and now uses that background to track down the electricians, dive supervisors, ship repair technicians, and...

YouTube has quietly become one of the best platforms for ocean science communication, and in this episode Andrew breaks down exactly why. Fresh off yesterday's 2,000-episode milestone and the new Pisces Oceans licensing agreement, Andrew explains why he's diving back into YouTube after stepping away last spring, including the launch of a brand new daily show, Ocean Decoded Live. Andrew walks through his own history with video, from the early days of Speak Up for Blue TV through burnout, a rebra...

Today marks episode 2000 of How to Protect the Ocean, and Andrew is taking a break from the usual format to look back at how this show came to be. From an accidental start in 2010 to a name change driven by search engine optimization, to over 3 million downloads across 11 years, this episode traces the full arc of the podcast's history. Andrew also opens up about how podcasting reshaped his career. What started as a side project outside of work hours led to TV documentary appearances, podcast h...

Podcasting has been part of Andrew Lewin's life for 11 years, and in this episode he explains why he thinks more people working in ocean science and conservation should be doing it too. He walks through what makes long-form audio and video different from the short clips discussed in yesterday's episode: the ability to sit with complex topics, tell a full story, and reach an audience that's multitasking, whether they're walking the dog, working out, or gardening while listening. Andrew gets spec...

This week on the How to Protect the Ocean podcast, Andrew kicks off a science communication series exploring how ocean advocates can spread awareness across every major content format. Today's episode digs into short-form video: TikTok, Instagram Reels, and YouTube Shorts, and what it actually takes to make original content work when you're used to talking for an hour, not ninety seconds. Andrew is candid about his own struggle with the format, since most of his short-form output today is repurp...

Electric boating is having its Tesla moment, and few people understand that shift better than Alexandre Mongeon, CEO and co-founder of Vision Marine Technologies. Andrew sits down with Alexandre to trace his path from importing speed boats in Montreal to building the electric outboard systems now powering boats across North America. Along the way, Alexandre shares how a chance meeting with Olympic sailor and boat designer Ian Bruce set him on the road to electric propulsion, and how a rental-to-...

Not every ocean conservation win comes from a nonprofit or a government program. In this episode, Andrew breaks down three for-profit companies that are cleaning up the ocean, funding wildlife research, and paying living wages to the people doing the work. These businesses show that conservation and profit are not opposing goals. They can be the same goal. Andrew covers 4Ocean, whose full-time captains and cleanup crews earn living wages with health insurance and bonuses across Florida, Bali, H...

4ocean has removed more than 50 million pounds of plastic and trash from the world's oceans, rivers, and coastlines. That milestone did not come from a government program or a traditional nonprofit. It came from a for-profit business built around a single idea: every bracelet sold funds the removal of a pound of ocean trash. In this episode, Andrew breaks down how 4ocean went from one viral video in Bali to a global cleanup operation, why founders Alex Schulze and Andrew Cooper chose a business...

The boat rental market is bigger than most people realize, and it's growing fast. In this episode, Andrew shares a personal story about his dad, boats, and why he's spent the last few months considering buying one, before walking through the data that changed his mind about ownership altogether. Andrew breaks down the numbers behind the boat sharing economy: a market valued between nineteen and twenty three billion dollars US, growing five to seven percent a year, with electric propulsion emerg...

Global shipping moves roughly 80 to 90% of the world's trade, and it comes with a real climate cost: the industry is responsible for a little over 2% of global CO2 emissions. On today's episode of the How to Protect the Ocean Podcast, Andrew looks at one of the more surprising fixes the industry is turning to: sails. Not the old canvas kind, but massive rigid wing sails retrofitted onto modern cargo vessels to cut fuel use and emissions without waiting on next-generation fuels. The centerpiece ...

Hollywood might not be the first industry you think of when it comes to protecting the planet, but film and TV production has been quietly transforming how it operates behind the scenes. In this episode, Andrew sits down with Zena Harris, founder and president of Green Spark Group and co-host of The Tie-In podcast, to unpack what sustainability actually looks like on a working film set. Zena walks through the surprising ways major productions are cutting fuel consumption, swapping diesel genera...

Businesses love to say they are sustainable. Andrew breaks down why that word is no longer enough on its own. A new EU consumer protection regulation now requires companies to prove environmental claims with evidence, and it has helped drive more than 400 greenwashing-related enforcement actions across the US, UK, EU, Canada, Australia, and India in 2026 alone. Andrew draws on his own university experience with food labeling regulation to explain how vague standards let companies technically co...

Sustainability conversations usually center on ecosystems, emissions targets, and corporate pledges, but this episode makes the case that people belong at the center of that conversation too. Andrew looks at how communities living closest to refineries, extraction sites, and industrial waterfronts carry a disproportionate share of the pollution burden, often without having consented to the risk in the first place. Using a Philadelphia refinery as a case study, Andrew walks through how fenceline...

Sustainability isn't just good PR; it's good business math. In this episode, Andrew breaks down why companies are shifting toward circular business models, using Philips Lighting as a case study in selling light as a service instead of a product. He digs into the economics behind the shift: a British industrial symbiosis study that saved companies significant money and cut CO2 emissions, a PwC Sweden study showing double-digit operating cost reductions in circular electronics, and the rise of su...

Sustainability anxiety is real. Watching wildfires spread, sea levels rise, and ice melt while governments drag their feet on climate policy can leave anyone feeling stuck. Andrew opens today's episode by naming that frustration directly, then makes the case for where real momentum is actually coming from: business. This episode breaks down why companies are adopting sustainability practices, sometimes because they want to and sometimes because regulation and consumer pressure leave them little...

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...