A cooler of eggs and a bold plan to save leopard sharks

July 28, 2026

AI Summary

5 min read

In the waters off Raja Ampat, Indonesia, a group of conservationists is trying something that has never been done on this scale with sharks: raising them from eggs shipped from aquariums around the world and releasing them into the wild. At the end of last year, independent journalist Katarina Barton stumbled across a shark nursery in West Papua while reporting on a different story. There, she met Maria Sultan, an aquarist and "shark nanny," who showed her tanks filled with baby Indo-Pacific leopard sharks. "This is the example of the leopard sharks," Maria said, holding up a pup that had just hatched a week earlier. "And this one egg we are expecting to hatch this week." The eggs had come from as far away as Georgia, Washington, California, and Australia. The goal: bring a species back from the brink of extinction.

The crisis facing leopard sharks

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What you'll learn

1 (00:50) **Introducing the Leopard Shark Rewilding Project** - Independent journalist Katarina Barton joins Nate Rott to share a story from Indonesia about a groundbreaking shark conservation effort.
2 (02:21) **The Crisis: Why Leopard Sharks are Endangered** - Leopard shark populations have declined by over 80% globally, driven by multiple threats.
3 (03:52) **The Central Question** - The episode frames its core investigative question: Can one of the world's leading shark fishing nations become a leading shark conservation nation?
4 (05:15) **Meet the Leopard Shark** - A detailed look at the biology and appearance of the leopard shark, also known as the zebra shark.
5 (06:51) **"Labradors of the Sea"?** - The sharks' docile nature is explored, with a caveat about respecting them as wild predators.
6 (07:39) **The Paradox: Releasing Sharks in a Fishing Nation** - The apparent risk of releasing sharks in Indonesia is addressed by explaining local protections.
7 (08:48) **Why Natural Repopulation Isn't Enough** - The population is so depleted that natural recovery is impossible without intervention.

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Show Notes

Leopard sharks have nearly vanished from the waters in Raja Ampat, Indonesia. The country is one of the largest shark fishing nations in the world. Now, a first-of-its-kind conservation project is working to bring Indo-Pacific leopard sharks back from the brink of extinction. This international project hatches their eggs and raises shark pups to rewild them into the ocean where they once thrived. Will it be enough?

For answers, we talk to freelance journalist Katerina Barton. She takes us behind-the-scenes to a shark nursery and shares what this conservation project could mean for other shark species.

Interested in more conservation news? Email us your question at [email protected].

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