# Know the Unknown: Why Does the Puffer Fish Become a Big Balloon?

An episode of [Fantastic Science Lab 丨Fun Stories for Curious Kids](https://invisiblenetwork.ai/podcast/1595000278), 6 Jun 2022, 4:53.

Audio: https://api-audiodata.babybus.com/audio/url/0/en/74418/2251712.mp3?v=F62CC3305CAD1263B9C505EE80BEAE2A

In the beautiful ocean, Spot, the little fish, was exercising among the coral. Suddenly, she heard a sound.

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