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Science & Medicine

The Speak Up For Blue Podcast

Andrew Lewin - Marine Biologist and Ocean Conservationist

The Speak Up For Blue Podcast raises awareness of the variety of ocean science and conservation projects conducted all around the world. It educates you, the listener, on the different Ocean...

Episodes

20 of 2,019 episodes

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 no...

10:10Oct 8, 2026

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...

09:39Oct 7, 2026

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 ex...

10:57Oct 6, 2026

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...

50:47Oct 5, 2026

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, a...

19:39Oct 2, 2026

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 ge...

14:54Oct 1, 2026

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 north...

18:46Sep 30, 2026

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...

16:19Sep 29, 2026

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 Universit...

40:12Sep 28, 2026

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...

13:52Sep 25, 2026

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 t...

15:12Sep 25, 2026

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 settl...

10:16Sep 23, 2026

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 att...

09:42Sep 22, 2026

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...

59:23Sep 21, 2026

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...

10:45Sep 17, 2026

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 t...

17:10Sep 17, 2026

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...

13:37Sep 15, 2026

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...

19:49Sep 15, 2026

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 carb...

01:02:37Sep 14, 2026

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 municip...

17:06Sep 11, 2026