What can seashells tell us about the oceans' health?

Environmental journalist Cynthia Barnett joins this episode to discuss her fascinating new book, "The Sound of the Sea: Seashells and the Fate of the Oceans," about the many ways humans have prized seashells for millennia, using them as money, jewelry, and art, plus how seashells help us examine the challenges marine environments are facing today.

We’re also joined by Mongabay's Philippines-based staff writer Leilani Chavez, who describes the incredible marine biodiversity found in the Philippines' waters (among the best in the world) and why there’s a movement to expand conservation efforts beyond the extensive coral reef systems.

View Leilani's recent report about Philippines’ MPAs and links to related coverage, here:

• With growing pressures, can the Philippines sustain its marine reserves?”

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Episode artwork: A selection of gastropods via Wikimedia Commons.   Please share your thoughts and ideas! submissions@mongabay.com.