Aaah, I didn't check it on the phone! ^_^;
I honestly wasn't expecting that it would show full screen. Those buttons are for an Android version I didn't upload in the end. On WebGL they're not resizing properly because the latest Unity is giving me "Screen.height = 0" on WebGL. No wonder you have issues with the D-Pad, it looks really small!
Regarding the drowning bears, I added the message that they swim home safe at the end of the game because my friends said I was mean to the poor bears. If I add drowning noises, they will report me to PETA for sure! xD
Thanks for playing! I will try to fix the full screen size or at least upload the Android version.