100 Years of Data Reveals Why Sharks Keep Stealing Your Catch
Release Date: 07/17/2026
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...
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What Dead Seabirds Are Trying to Tell Us About the Pacific Ocean
How To Protect The 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 how marine heat waves are disrupting one of the world’s most productive ocean ecosystems by reducing nutrients, shrinking fish populations, and breaking apart the marine food web. We also look...
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Who Really Decides Canada’s Climate Future?
How To Protect The Ocean
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 changes, climate policy often changes with it. We follow that chain of events to understand why...
info_outlineIf 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 decades of shark conservation, starting with the 1993 US shark management plan, actually worked, and a recovering shark population combined with more anglers on the water means more overlap, and more overlap means more bite-offs.
Andrew unpacks the concept of "dead discards," the fish that die during depredation but never get counted in stock assessments, and why that creates a blind spot in fishery management. The episode closes with concrete, same-day actions anglers (and non-anglers) can take, from changing fishing tactics to reporting depredation events to NOAA, so both fish and shark populations can keep being managed well.
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