The game seems to be having trouble loading the music. I've had it load only once, and I had to wait a long time. I never had trouble with the version on ducksoup-games.com, but that appears to be down...
No idea what might be causing this. But you can check out the original version here: https://rilem.nl/games_content/scubabear/index.html
The Ducksoup domain no longer exists so all content lives on rilem.nl