Seafood is one of the most important food systems on the planet—supporting livelihoods, feeding communities, and fueling a global industry. But it's also under growing pressure. Overfishing, climate change, and illegal fishing are putting many marine ecosystems at risk.

So how can we meet global demand for seafood without pushing our oceans past their limits? And what role should companies play in building healthier, more resilient oceans?

In this episode of Nature Breaking, host Seth Larson speaks with Dr. Sarah Glaser, head of the Blue Foods program and Oceans Futures platform at WWF, and Andrew Russell, Global Marine Sustainability Lead at Mars. They discuss the challenges—and opportunities—of making seafood more sustainable. And they explore how a long‑standing partnership between WWF and Mars is working to improve sourcing practices, increase transparency across complex supply chains, and support healthier fisheries over the long term.

Links for More Info:

Dr. Sarah Glaser bio

Andrew Russell bio

Mars & WWF – Protecting Ocean Ecosystems

Chile Fisheries Improvement Project (FIP)

Chapters:

0:00 Preview

0:32 Intro

2:09 Defining "sustainable seafood"

6:02 Are we too late to save certain fish stocks?

8:37 How Mars got involved with sustainable seafood

12:14 How WWF and Mars are working together

16:14 Driving change for the whole seafood industry

20:04 What do best practices actually look like on a fishing vessel?

24:24 Blue finance – funding change at scale

31:58 What single change would have the biggest impact on ocean health?

35:51 Outro