I wasn't sure if I'd be able to blow up a balloon with my lungs while SCUBA diving 10m underwater. So I gave it a go!

We took all care to collect in any fragments of balloon and disposed of them properly.

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Dr Sally Le Page is a British evolutionary biologist and science YouTuber. The aim of these videos is to bring science further into popular culture by making science videos that make you laugh, make you feel and make you think.