Ghost Nets: Why They Keep Happening and What's Actually Working
Release Date: 07/21/2026
Ghost Nets: Why They Keep Happening and What's Actually Working
How To Protect The Ocean
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: entanglement patterns across whales, seals, sea turtles, and coral reefs, a personal diving story off Big...
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What the Wildfire Smoke in Your Sky Has to Do With the Ocean
How To Protect 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 briefly had the worst AQI in the world), and why northwestern Ontario, not a hugely populated area but home to vulnerable First Nations communities, bore the brunt of it. Then he digs into why this...
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100 Years of Data Reveals Why Sharks Keep Stealing Your Catch
How To Protect The Ocean
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 sharks showing up most often. But the real story isn't that sharks are out of control. It's that...
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What Lives in the Middle of the Ocean?
How To Protect 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 glass squid to strange colonial siphonophores. The discovery points to something bigger than one expedition. The ocean's midwater, the vast zone between the sunlit surface and the seafloor, is by volume...
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Oil Companies Knew Coral Reefs Would Dissolve. In 1978.
How To Protect The Ocean
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 through what the industry knew and when, how a funded think tank report in 2012 was built to look like an...
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Nearly 2,000 Volunteers Just Answered the Ocean's Biggest Question
How To Protect The Ocean
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 they finally pulled that decade of volunteer data together. We look at how the MPA Watch program...
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The Silent Damage Behind Your Canned Tuna
How To Protect The Ocean
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 recorded across 174 protected areas in 53 countries and territories. When a drifting FAD washes onto...
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The Hidden Solar Power Plant Living on Coral Reefs
How To Protect The Ocean
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 this relationship is similar to the one that helps corals build reefs and why researchers...
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What Happens to Your Water Before the Coast Floods?
How To Protect The Ocean
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’s largest river deltas. The consequences extend beyond drinking water to agriculture, public...
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The World Just Promised Billions, But Will the Ocean Benefit?
How To Protect The Ocean
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 question that rarely gets asked: how do we know whether these promises will ever become real...
info_outlineA 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: entanglement patterns across whales, seals, sea turtles, and coral reefs, a personal diving story off Big Cayman where he watched a ghost net get cut free from a loggerhead sea turtle, and the real economic and technical challenges holding back solutions like ropeless fishing gear and biodegradable nets. He also covers where progress is actually happening, from derelict net removal programs to circular economy recycling models.
This isn't a "just stop fishing" episode. Andrew makes the case that ghost nets are a solvable, adaptable problem, but one that needs more research funding, cheaper technology, and stronger enforcement to get there.
Takeaways from this episode:
- Ghost nets (ALDFG) are found from the ocean surface to the deep seafloor, and they keep catching and killing marine life for as long as they remain in the water.
- The animals most affected span whales, seals, sea turtles, and coral reef species, not just fish.
- Solutions like ropeless gear and biodegradable nets are real and improving, but cost and fisher adoption remain the biggest barriers.
- Stopping fishing altogether isn't a realistic fix. The path forward is better gear design, more funding, and stronger enforcement.
- Listeners can support the fisheries and programs that are already investing in gear-loss prevention and removal.
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