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One Key To Healthy Oceans? Sharks : Short Wave Shark scientist Melissa Christina Marquez explains just how important sharks are to keeping the oceans healthy, including their role in mitigating climate change. Plus, there may be some talk about shark poop.

Email the show at shortwave@npr.org.

Short Wave

One Key To Healthy Oceans? Sharks

One Key To Healthy Oceans? Sharks

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A school of horse-eye jacks is circled by reef and lemon sharks near Tiger Beach in the Bahamas. Andre Seale/VW PICS/Universal Images Group hide caption

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Andre Seale/VW PICS/Universal Images Group

A school of horse-eye jacks is circled by reef and lemon sharks near Tiger Beach in the Bahamas.

Andre Seale/VW PICS/Universal Images Group

Shark scientist Melissa Christina Marquez explains just how important sharks are to keeping the oceans healthy, including their role in mitigating climate change. Plus, there may be some talk about shark poop.

Email the show at shortwave@npr.org.

This episode was fact-checked by Ariela Zebede, and edited by Viet Le. Josephine Nyounai provided engineering support.