Thank you for the comment! Glad I was able to satisfy your underwater-loving itch :)
I tried to minimize the controls for the game and make them more accessible, thus the decision to wire all of the main actions to the mouse. Hopefully, it still felt intuitive, even if it was a bit unusual.
Unfortunately, the web version is unstable due to a lack of optimization on my part, so sorry for the inconvenience there. I'm glad you were interested enough to download and play it anyway, and enjoyed the ride :)