Libsyn Directory

Red Tide, Decoded: Why It Isn't Random, and How to Track It

Release Date: 09/15/2026

Red Tide, Decoded: Why It Isn't Random, and How to Track It

How To Protect The Ocean

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 no visible sign anything's wrong. The 2017 to 2019 Southwest and Southeast Florida bloom cost the region an estimated $2.7 billion, mostly in tourism losses, and it wasn't a freak event. Follow the...

Nature's Kidneys: How Coastal Wetlands Stop Ocean Pollution

How To Protect The Ocean

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 problem. A single restored 100-acre wetland cut nearby ammonia by 62 percent and total nitrogen by 37 percent, and saved local water systems about $17,000 a year, all within three years. Then there's...

Blue Nitrogen: The Nutrient Story Coastal Wetlands Have Been Hiding

How To Protect The Ocean

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 associate at the Smithsonian Environmental Research Center, thinks there's a second story hiding in that same soil that could matter just as much, or more: nitrogen. Langley and 37 co-authors just...

Who Pays for Plastic? Inside the Law Quietly Shifting the Bill to Producers

How To Protect The Ocean

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 selling packaging fund what happens to it after a customer buys the product, not the city that collects it afterward. Seven US states have now passed packaging EPR laws. Oregon has been charging...

Inside Ocean Conservancy's Fight to Make Washing Machine Filters the Law

How To Protect The Ocean

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 of requiring filters on new washing machines. The public isn't the obstacle. The real opponent is AHAM, the Association of Home Appliance Manufacturers, the trade group representing the companies...

Your Washing Machine Sheds Up to 18 Million Microfibers a Load

How To Protect The Ocean

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 treatment plant, and out the other side into biosolids, farmland, rivers, and the ocean, with a growing body of research suggesting some of it ends up in human lungs and even in the human placenta....

Can Bacteria Actually Eat Plastic?

How To Protect The Ocean

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 ocean plastic crisis actually needs. The bacterium that started this whole field, Ideonella sakaiensis, was discovered breaking down PET plastic in Japan in 2016. A 2025 breakthrough from NREL,...

The 90 Percent Fix Hiding in Your Laundry Room

How To Protect The Ocean

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 happening. In this episode, Andrew talks with Dr. Anja Brandon, Director of Plastics Policy at Ocean Conservancy, about the plastic pollution problem hiding in plain sight behind the more familiar...

A New PBS Documentary Wants You to Care About Coral. Meet the Man Behind It.

How To Protect The Ocean

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 conversation this week's four solo episodes have been building toward: 30-plus years running a dive shop, more than 10,000 dives, and a front-row seat to watching the reefs he built his life around...

Show Me the Receipts: Why I.CARE Monitors Every Coral It Plants

How To Protect The Ocean

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 Mike Goldberg and Dr. Kylie Smith before I.CARE ever planted its first coral, and Mike frames it as a matter of fiduciary duty, the same obligation he'd expect from anyone handling someone else's...

More Episodes

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 no visible sign anything's wrong. The 2017 to 2019 Southwest and Southeast Florida bloom cost the region an estimated $2.7 billion, mostly in tourism losses, and it wasn't a freak event. Follow the water back far enough and it traces to nitrogen and phosphorus flowing out of the Kissimmee River basin, through Lake Okeechobee, and down the Caloosahatchee River into the Gulf, fueling the same algae that's always been there into a much bigger, longer bloom.

Here's the turn: this is trackable. Mote Marine Laboratory's Beach Conditions Reporting System lets anyone on the Gulf Coast check named beaches for red tide conditions before they ever leave the house, the same way you'd check a weather forecast. This episode also connects back to the nutrient-pollution mechanism from the "nature's kidneys" episode with Adam Langley, and lands on one thing you can actually do this season.

Takeaways:

Red tide is caused by Karenia brevis, an algae that produces brevetoxin, a toxin that becomes airborne in sea spray and can cause coughing and respiratory irritation, worse for people with asthma but capable of affecting anyone near the water.
The 2017–2019 Southwest and Southeast Florida red tide bloom cost the region an estimated $2.7 billion, mostly in tourism-dependent business losses.
Red tide blooms are naturally occurring, but excess nitrogen and phosphorus flowing from the Kissimmee Basin through Lake Okeechobee and down the Caloosahatchee River make them bigger, longer, and more frequent.
A legally mandated program has cut phosphorus leaving Everglades-area farmland by roughly 55 percent long-term, against a 25 percent legal minimum, but the broader system still isn't meeting the water quality standard the Gulf and estuaries need.
Mote Marine Laboratory's free Beach Conditions Reporting System lets Gulf Coast beachgoers check red tide conditions beach by beach before they go.

Gulf Of Mexico Red Tide Tracker: https://coastalscience.noaa.gov/science-areas/habs/hab-forecasts/gulf-coast/

Support Independent Podcasts: https://www.speakupforblue.com/patreon

Need help with your ocean non-profit, company, or project? Get the help you need with Pisces Oceans Inc.: https://www.piscesoceans.ca

Connect with Speak Up For Blue
Website: https://bit.ly/3fOF3Wf
Instagram: https://bit.ly/3rIaJSG
TikTok: https://www.tiktok.com/@speakupforblue
Twitter: https://bit.ly/3rHZxpc
YouTube: www.speakupforblue.com/youtube

TOPICS