How do you 'dive' when swimming?

[DodoTheBlue]

How do you dive when swimming? there's an icon on the right hand side of the screen saying 'dive' with the space bar icon underneath it. There's no key binding options and I've pressed every single key to see if it's hidden.

[konshtok]

C
and swip up with space

[Devs]

hello what about on controller says X but nothing happens?

[Flashand]

use your crouch button