Nice report. Do you play in browser or in downloaded version? Do you click "Dive" using mouse or Enter key? Has this ever happened on first playthrough (in comparison to happening only after dying/manually starting new game)?
This is something that has been reported but has been very elusive to repeat, we are looking for more info to dig in. My first hunch tell me that it has something to do with UI because Space key is the one that activates selected UI element.