In this episode, Sean and Robot look at some of the challenge underwater vessels face when trying to go to the ocean floor.

<p>In this episode, Sean and Robot look at some of the challenge underwater vessels face when trying to go to the ocean floor.</p>

We're the UK's children's radio station. Listen across the UK on DAB Digital Radio, on mobile and online at funkidslive.com.

<p>We're the UK's children's radio station. Listen across the UK on DAB Digital Radio, on mobile and online at funkidslive.com.</p>

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