Libsyn Directory

The Power of Podcasting for Ocean Science Communication

Release Date: 08/11/2026

The Cod Came Back: What a Fishery Collapse Teaches Us About Overfishing

How To Protect The Ocean

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 story of how the collapse happened and how slowly the cod came back. Andrew then breaks down the words that cause the most confusion in fisheries headlines: overfishing, overfished, depleted, and...

How to Choose Sustainable Seafood

How To Protect The Ocean

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 those choices carry real weight. In this episode, Andrew’s good friend Dr. David Shiffman joins the show to talk about his new book, Why Sustainable Seafood Matters. David spent two years on the...

Slow Down for Whales: How Global Shipping Learned to Share the Ocean

How To Protect 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 population can lose and still recover. The good news is in the data. Most blue whale strike deaths happen in a small slice of ocean, and that’s where ports, air quality agencies, marine sanctuaries, and...

When Whale Food Moves: Climate Change, Crab Traps, and Pop-Up Gear

How To Protect The Ocean

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 10 a year to 53 in 2015 and 55 in 2016. In this episode, Andrew traces the line from warmer water to a specific whale in a specific rope. You'll learn why lunge-feeding whales depend on dense patches...

The Whale Heart That Beats Twice a Minute

How To Protect The Ocean

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 team at Stanford, and a study by Terrie Williams of UC Santa Cruz that tracked narwhals fleeing after release from nets in East Greenland. The narwhals swam as hard as they could while their hearts fell...

The Biggest Mouthful: How Blue Whales Eat and Why Krill Matters

How To Protect The Ocean

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 Age of Giants series, Andrew breaks down how rorqual whales feed, then follows the krill. In 2025, the Antarctic krill fishery hit its 620,000 tonne precautionary limit for the first time and closed...

Whales Are Sprinters: What a Blue Whale's Heart Does When It Lunge Feeds

How To Protect The Ocean

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 lunge feeding (accelerate, engulf, filter) and why these giants behave a lot like human sprinters. Their heart rates stay high after each lunge, then gradually recover while they glide and filter,...

The Pollution That Breeds: How the Great Lakes Stopped Invaders

How To Protect The Ocean

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 in on ship ballast water, clogged power plant intakes, and stripped plankton from the base of the food web. Lionfish, likely released from home aquariums, spread from Florida across the Caribbean and...

How Beach Cleanup Data Helped Canada Ban Plastic

How To Protect The Ocean

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 in Stanley Park in 1994, where Vancouver Aquarium staff and volunteers started picking up trash and writing down what they found. That cleanup grew into a national program, and its data fed into the...

What Happens to Fish When Our Pills Reach the Water?

How To Protect The Ocean

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 explains how the same chemistry leaves our bodies every day, passes through treatment plants built for sewage and bacteria, and flows into rivers, lakes, and the coast. Hormones are only part of it. In...

More Episodes

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 specific about what podcasting actually requires. He covers how titles and the first several seconds of an episode function as the hook, why podcast search and discovery lag behind YouTube's, and why algorithms on platforms like Spotify and Apple Podcasts make organic growth slow. He's also direct about monetization: there's no creator fund, sponsorships have to fit your brand, and building a loyal audience takes years, not weeks. (Note: the specific reach and market-size figures cited in this episode should be verified before publishing.)

The throughline is that podcasting isn't a shortcut to reach or income. It's a long game that builds authority, opens doors, and gives ocean science a format built for depth. Andrew shares how the show helped him land his role at Pisces Oceans, and closes with practical advice for anyone considering starting a show: listen first, differentiate your angle, and don't worry about equipment before you worry about your message.

Takeaways:

Long-form podcasting allows for depth and storytelling that short-form content can't accommodate
Titles and the opening hook (roughly the first 10 seconds) heavily influence whether a new listener stays
Podcast discovery and algorithms lag behind YouTube's searchability
Monetization in podcasting is slower and less structured than other content platforms; sponsorships need to align with your brand values
Building a loyal, engaged audience takes years of consistency, not virality
Differentiating your podcast's angle matters more than competing head-on with existing shows in your niche
Equipment is a secondary concern; message clarity comes first

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