How To Protect The Ocean
Join Andrew Lewin on 'How to Protect the Ocean' for exclusive insights into ocean science and conservation. The podcast covers the latest ocean news, teaches how to speak up for the ocean, and provides actionable steps to live for a better ocean. Topics include climate change, overfishing, plastic pollution, water pollution, and coastal development. Each episode aims to find optimism in the future of the ocean despite the challenges.
Episodes
The Trapdoor That Saves Sea Turtles From Shrimp Nets
A Kemp's ridley sea turtle, the most endangered sea turtle on Earth, gets swept into a shrimp trawl. It hits a metal grid, slides out through a flap in the net, and swims away. That small trapdoor, the turtle excluder device, is one of the biggest success stories in fisheries management, and in late August 2026 a US federal appeals court upheld the rule extending it to skimmer trawl boats 40 feet
The Cod Came Back: What a Fishery Collapse Teaches Us About Overfishing
Five centuries ago, explorers off Newfoundland described cod so plentiful that a weighted basket lowered into the sea came back full. By July 2, 1992, so few remained that Canada shut the northern cod fishery overnight. About 30,000 people lost their work in what became the largest single layoff in Canadian history. In this first episode of a week-long sustainable seafood series, Andrew tells the
How to Choose Sustainable Seafood
You want to eat seafood the right way. Then you hit the seafood counter and face a wall of labels, a sign promising "sustainable practices," and an employee who has no idea where the tuna came from. Add documentaries like Seaspiracy telling you to quit fish entirely, and it's tempting to give up and buy whatever looks good. Unsustainable fishing is the biggest threat to marine biodiversity, so tho
Slow Down for Whales: How Global Shipping Learned to Share the Ocean
Blue whales can't dodge ships. When scientists tracked blue whales alongside cargo ships off Southern California, the whales responded in just over half the encounters, and every response was the same: a slow, shallow dive. Not once did a whale move sideways out of the ship's path. Models suggest ships kill around 18 blue whales a year off the U.S. West Coast, nearly eight times what the populatio
When Whale Food Moves: Climate Change, Crab Traps, and Pop-Up Gear
In 2014, a patch of unusually warm water nicknamed "the blob" settled off the west coast of North America. The cold, food-rich water that normally stretches far offshore shrank into a narrow strip along the coast, and hungry humpback whales followed their food straight into the waters where Dungeness crabbers had set thousands of traps, each tied to a vertical rope. Entanglements jumped from about
The Whale Heart That Beats Twice a Minute
Fill your hands with cold water, hold your breath, and press your face in. Your heart slows within seconds. That reflex lives in every whale in the ocean too, and in a blue whale it is pushed so far that the largest heart on Earth can drop to two beats a minute on a deep dive. In this episode, Andrew walks through the first heart rate recording from a wild blue whale, led by Jeremy Goldbogen's tea
The Biggest Mouthful: How Blue Whales Eat and Why Krill Matters
A blue whale can swallow a volume of water bigger than its own body in a single gulp. That move, called lunge feeding, is one of the most extreme feats in the animal kingdom, and it only pays off when krill is packed into thick, dense swarms. In a thin patch, a blue whale gets back about six times the energy it spent. In a dense swarm, it gets back more than 200 times. In this first episode of the
Whales Are Sprinters: What a Blue Whale's Heart Does When It Lunge Feeds
What happens to the heart of the largest animal on Earth when it charges into a swarm of krill? Dr. Ashley Blawas, a postdoctoral scholar in Jeremy Goldbogen's lab at Stanford's Hopkins Marine Station, joins Andrew to unpack new research published in PNAS that measured the heart rates of lunge-feeding blue whales and humpback whales using suction-cup ECG tags. Ashley explains the three phases of l
The Pollution That Breeds: How the Great Lakes Stopped Invaders
In 1988, someone found a striped mussel the size of a fingernail in Lake St. Clair. Within a few years, zebra mussels coated pipes, boats, and the bottom of the Great Lakes, and they became the poster child for "it's too late." Andrew closes Marine Pollution week with the pollutant that breaks every rule: a living one that reproduces instead of diluting. He follows two invaders. Zebra mussels rode
How Beach Cleanup Data Helped Canada Ban Plastic
You rinse the yogurt tub, check the number on the bottom, and drop it in the blue bin. In Canada, only about 9% of plastic waste actually gets recycled, and the global rate is the same. Andrew breaks down why plastic is so hard to recycle, why microplastics are so hard to study, and what the controversy over plastic-in-the-brain headlines does and doesn't tell us. Then the story moves to a beach i
What Happens to Fish When Our Pills Reach the Water?
In 2001, government scientists started adding a tiny amount of the synthetic estrogen found in birth control pills to a remote lake in northwestern Ontario, at levels already measured in city wastewater. Within seven weeks, male fish were making egg-yolk protein. After two summers, some had eggs growing in their testes, and the fathead minnow population collapsed to about 1% of normal. Andrew expl
How Did Humpback Whales End Up in New York Harbour?
This summer, people are boarding whale watching boats and seeing humpbacks feeding in sight of the Manhattan skyline. Fifty years ago, that same water was an open sewer, and every toilet on Manhattan's West Side flushed straight into the Hudson River, untreated. Andrew tells the story of how the whales got here, and why it took most of a century. He starts with the cause: sewers built to empty int
Plastic Is Still the Ocean's #1 Villain, with Dr. Judith Weis
Plastic keeps getting made, it never goes away, and almost none of it gets recycled. Dr. Judith Weis, Professor Emerita at Rutgers University Newark and Andrew's very first guest on this podcast more than 2,000 episodes ago, returns for her fourth appearance to talk about the second edition of her book, Marine Pollution: What Everyone Needs to Know. Judith walks through every major category of mar
You Left a Public Comment. Now What?
All week, Andrew has asked listeners to comment on and show up for California's marine protected area review. Today he answers the question that comes after: once the meeting ends and the news coverage stops, how do you find out if anything actually changed? He works through four practical questions every ocean advocate should know how to answer. First, where to find the current rules for any of t
Does Your Public Comment Count? Two Ocean Wins Show How
Earlier this year, about 65,000 people submitted comments on a federal deep-sea mining proposal near the Northern Mariana Islands, most of them opposed. The area under consideration nearly doubled anyway. So why should anyone show up to a public meeting about the ocean? Andrew Lewin makes the case with two marine protected area processes that earned broad public support by design. The first is the
The Blob Hit California's Kelp. Protected Kelp Came Back Faster.
In 2014, just two years after California finished its statewide network of marine protected areas, a marine heatwave known as The Blob settled over the Pacific coast and stayed for two years. Kelp forests collapsed up and down the state, and sea star wasting disease wiped out sea stars on a scale few scientists had seen. For a network built partly to protect kelp habitat, it was the worst possible
300 People, 50 Tribes, One Meeting: How California Built Its Marine Protected Areas
In 1999, California passed a law ordering the state to fix its patchwork of ocean parks. For two years, almost nothing happened, and two attempts to get the process moving both failed. It took a 2004 public-private partnership, roughly $35 million in public and philanthropic funding, and a decade of work before the state had a real network of marine protected areas. Partway through that decade, mo
California Votes on 15 MPA Changes in October. Who Got a Say?
California has a network of 124 marine protected areas, and in October the state's Fish and Game Commission takes up 15 proposals that could change it. The proposals came out of the network's first 10-year management review, an adaptive management process written into the law so the network could respond to shifting fish populations, a warming climate, and evolving public values. Anupa Asokan, fou
Millimeters That Matter: The Sea Level Rise Threshold Coastal Wetlands Can't Survive
Sea level rise. It's a phrase everyone's supposed to be afraid of, and almost nobody can picture. A couple of millimeters a year sounds too small to matter, until you find out coastal wetlands have an exact, measured speed limit for how fast they can keep up, and the ocean is closing in on it. Marshes and mangroves have kept pace with a rising sea for thousands of years by building their own soil
What the Coast Is Worth: How a Dollar Number Is Already Funding Its Protection
A boat's wake looks harmless right up until you watch it happen over and over. Every wake a boat throws off chips away at a shoreline that took centuries to build, and it happens on calm days, sunny days, days with no storm anywhere near. A NOAA study at Snow's Cut, North Carolina found that roughly half of all boat wake heights on that stretch of the Atlantic Intracoastal Waterway exceeded the la
Red Tide, Decoded: Why It Isn't Random, and How to Track It
No smell. No warning. Just a beach full of people who start coughing at the same time, grab their towels, and leave. That's red tide, and it feels completely random until you know what's actually happening in the water. Karenia brevis, the algae behind it, produces a toxin called brevetoxin that rides the wind and waves into the air along the shoreline, which is why people can start coughing with
Nature's Kidneys: How Coastal Wetlands Stop Ocean Pollution
Green water. A smell that won't go away. Sometimes, dead fish washing up on shore. That's what too much nitrogen does to a coastline, and it's easy to hear stories like this and feel like the ocean is just losing. This episode is the opposite of that. Here's what most people don't know: a healthy stretch of marsh or mangrove can pull nitrogen straight out of the water before it ever becomes a prob
Blue Nitrogen: The Nutrient Story Coastal Wetlands Have Been Hiding
Every time this podcast talks about coastal wetlands, the conversation goes straight to carbon. Marshes, mangroves, and seagrasses pull carbon dioxide out of the atmosphere and lock it in soil for centuries, and that story has earned coastal ecosystems a real seat at the climate table. Dr. Adam Langley, a global change ecologist and professor of biology at Villanova University and a research assoc
Who Pays for Plastic? Inside the Law Quietly Shifting the Bill to Producers
For decades, the honest answer to "who pays to deal with plastic packaging once it leaves the shelf" was taxpayers, quietly, through municipal budgets that funded garbage trucks and recycling plants running at a loss, whether or not the packaging actually got recycled. That's the system extended producer responsibility (EPR) is built to replace: a legal requirement that the companies making and se
Inside Ocean Conservancy's Fight to Make Washing Machine Filters the Law
Ocean Conservancy's "Not Safe for Wash" campaign is built around a simple premise: the fix for washing machine microfiber pollution already exists, so the fight isn't about inventing new technology, it's about forcing a nearly two-decade-old idea into law. Its own May 2026 poll of 1,010 Americans found concern about microplastics up 32% since 2023, nearly 9 in 10 people concerned, and 81% in favor
Your Washing Machine Sheds Up to 18 Million Microfibers a Load
Every wash cycle sheds plastic. Last Monday, Andrew talked with Dr. Anja Brandon of Ocean Conservancy about microfiber pollution, and one question from that conversation stuck with him: has anyone actually fixed this yet? In this solo follow-up, Andrew traces a microfiber's actual path, from the moment agitation, heat, and detergent work it loose from a shirt, through the drain, into a wastewater
Can Bacteria Actually Eat Plastic?
Bacteria that eat plastic sounds like the fix everyone's been waiting for, and Andrew gets sent videos about it constantly. So on this solo episode, following Monday's interview with Dr. Anja Brandon of Ocean Conservancy, he goes looking for the real state of the science. The short version: it's promising, it's roughly a decade of real research deep, and it is nowhere close to running at the scale
The 90 Percent Fix Hiding in Your Laundry Room
Every time you run a load of laundry, your washing machine sheds plastic. Not metaphorically: synthetic clothing made from polyester, nylon, and rayon releases microfibers with every wash, and depending on the study, a single load can shed anywhere from a few hundred thousand to millions of them. Most of us have never thought about it, because unlike a plastic bag on the beach, you can't see it ha
A New PBS Documentary Wants You to Care About Coral. Meet the Man Behind It.
A new documentary called Descent – Into the Blue starts airing on public television stations nationwide on September 1, 2026. It's narrated by Peter Coyote, directed by Rory Fielding, and one of its central voices is Mike Goldberg, co-founder of the Florida Keys coral restoration nonprofit I.CARE and owner of Key Dives in Islamorada. Andrew sits down with Mike for the full, unedited version of the
Show Me the Receipts: Why I.CARE Monitors Every Coral It Plants
Most coral restoration groups check on a sample of what they've planted, often around 20 to 30 percent, and report that sample as if it represents everything in the water. I.CARE checks on all of it. Every single coral outplant gets monitored at one week, one month, 90 days, then one, two, and three years, with no substitute and nothing left unaccounted for. That rule was built in by co-founders M
The Nursery Hack That Pays for Itself
Coral nurseries need constant maintenance, and that maintenance is expensive and relentless. When Andrew talked to Mike Goldberg, co-founder of I.CARE, his answer wasn't to hire more staff. It was to let paying customers do it for the fun of it. Mike owns a dive shop in the Florida Keys, so the paying customers are scuba divers, and over the years he's built a funding model so small that nobody ha
He Almost Quit the Dive Business. Then a Coral Reef PhD Student Walked In.
Mike Goldberg had over 10,000 dives and decades running a dive shop in the Florida Keys, enough time to have seen the reefs at their pristine best. Then came a coral bleaching event in 2008, and a few years later, Stony Coral Tissue Loss Disease, a still-unexplained outbreak that's killed coral tissue outright across more than 20 of Florida's roughly 45 stony coral species since 2014. At one point
84 Percent: Inside the Worst Coral Bleaching Event Ever Recorded
This year, most of the coral on the planet went through heat stress severe enough to bleach it. That's not a rounding error: 84 percent of the world's reef area, across the Pacific, Atlantic, and Indian Oceans, and NOAA had to add three brand-new alert levels to its Coral Reef Watch scale because the existing one had no category for what was happening. In this episode, Andrew breaks down exactly w
Everyone in the Tent: How Ocean Treaties Actually Get Made
Holly Koehler has spent almost thirty years in rooms most people never think about: windowless UN offices in New York, the FAO in Rome, and what she calls "oftentimes very boring hotel ballrooms around the world," where countries hash out how the ocean actually gets managed. She's the Vice President of Policy and Outreach at the International Seafood Sustainability Foundation (ISSF), and before th
Inside the System That Makes a Seafood Label Trustworthy
Between a fishing vessel out on the water and a can of tuna in your grocery cart, there is a complex, little-understood system working to verify whether you should trust what is on the label. In this episode of the How to Protect the Ocean Podcast, host Andrew Lewin breaks down how that system actually works, and why the blue check mark on your seafood means something real. Andrew starts with the
The Ship Has Reached the Shore: The High Seas Treaty Explained
There's a video online of a room full of exhausted diplomats breaking into applause after nearly 20 years of work. One woman brings down the gavel and says, "the ship has reached the shore." That moment, in March 2023, closed out a negotiation that had already failed once in public. It became binding international law this year, and the fight over what it actually protects is happening right now.
Corals Nearly as Old as the Pyramids, and the Fight to Save Them
Somewhere on the ocean floor right now, a coral colony has been growing since before the Great Pyramid of Giza was finished. One deep-water black coral off the coast of Hawaii has been dated at 4,270 years old, making it one of the oldest living skeleton-building organisms known to science. A single pass of a bottom trawl net can wipe out that kind of habitat in seconds, and it's a fight that's st
A Summer Internship, Thirty Years, and One Career for the Ages
A grad student faces a simple choice: write another term paper, or take a summer internship. She takes the internship, gets assigned to sea turtles, and thirty years later she is in the room for some of the most consequential ocean policy agreements ever negotiated. This episode traces that career from the beginning, and it starts with a realization that shapes everything that follows: sea turtles
Deep Sea Mining Exposed: Inside the Fight to Save the Ocean's Last Frontier
Deep sea mining is no longer theoretical. In this episode, Andrew sits down with Matthew Gianni, co-founder and Political and Policy Advisor of the Deep Sea Conservation Coalition, for an in-depth look at what's actually happening on the seafloor and in the negotiating rooms deciding its fate. Matthew spent years as a commercial fisherman, including five years as a deep sea trawlerman off the Cent
5,000 New Species Prove the "Ocean Desert" Deep Sea Mining Claim Is Wrong
In September 2021, Time magazine profiled Gerard Barron, CEO of The Metals Company (TMC), and his push to mine the Clarion Clipperton Zone (CCZ), a stretch of international seabed between Hawaii and Mexico. In that profile, Barron called the CCZ "the most desert-like place on the planet," arguing that mining the deep sea does less environmental harm than mining a rainforest because there's suppose
The Gerard Barron Pattern: Why a CEO Who Watched One Deep-Sea Mining Company Collapse Is Trying Again
Why would someone who watched one deep-sea mining company collapse go back and try it again? That's the question at the center of this episode, and it's not hypothetical. It happened, with the same industry, some of the same licenses, and the same person at the center of it: Gerard Barron, now CEO of The Metals Company (TMC), one of the most prominent and best-funded companies pushing to start com
Bottom Trawling on Seamounts: The Damage Nobody Sees
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
From Shoveling Coral Overboard to Negotiating at the UN
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.
Blue Collar White Coat: Meet the People Behind Ocean Science
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
Why YouTube Might Be the Future of Ocean Science Communication
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 throu
Episode 2000: TV Offers, Job Offers, and a Major Announcement
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
The Power of Podcasting for Ocean Science Communication
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 multita
Short-Form Content for Ocean Awareness: What Actually Works
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 i
The Electric Boat Revolution Is Here
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
3 For-Profit Companies Cleaning the Ocean and Paying Living Wages
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 cap
How 4ocean Turned Bracelets Into 50 Million Pounds of Ocean Trash Removed
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
The Boat Sharing Economy Is Exploding, Here's Why You Shouldn't Buy a Boat
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 tw
Why Cargo Ships Are Bringing Back Sails to Cut Emissions
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 car
Can Hollywood Go Green? Inside the Sustainable Production Movement
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
Greenwashing Exposed: Why 400+ Companies Got Caught Lying About Sustainability in 2026
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 e
People and Sustainability: The Human Cost Big Business Keeps Ignoring
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
Why Sustainable Companies Actually Save Money
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 Swe
Why Sustainability Is Becoming a Business Requirement
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, some
How to Network at Marine Science Conferences Like a Pro
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
Marineland Canada Shuts Down: The Beluga Whale Rescue Begins
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 throug
American Samoa Said No to Deep-Sea Mining. The US Government Doubled The Area
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
Ghost Nets: Why They Keep Happening and What's Actually Working
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 wa
What the Wildfire Smoke in Your Sky Has to Do With the Ocean
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
100 Years of Data Reveals Why Sharks Keep Stealing Your Catch
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 le
What Lives in the Middle of the Ocean?
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 glas
Oil Companies Knew Coral Reefs Would Dissolve. In 1978.
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 understo
Nearly 2,000 Volunteers Just Answered the Ocean's Biggest Question
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 i
The Silent Damage Behind Your Canned Tuna
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 thro
The Hidden Solar Power Plant Living on Coral Reefs
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 us
What Happens to Your Water Before the Coast Floods?
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 lear
The World Just Promised Billions, But Will the Ocean Benefit?
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
What Dead Seabirds Are Trying to Tell Us About the Pacific Ocean
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
Who Really Decides Canada's Climate Future?
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
The Hidden Ocean World Most of Us Will Never See
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 ou
What We Don't Know About the Ocean Could Cost Us Everything
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
How Do Scientists Explore a Place Humans Can't Survive?
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 remotel
The Deep Sea Isn't Barren, Here's Why That Changes Everything
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, fre
We've Explored Space Better Than Our Own Ocean, How Is That Possible?
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 eco
What Happens to Ocean Science During a War?
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
The Return of Mangroves Should Give You Hope
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 conservatio
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