Here's my live playthrough of your game:

Nice idea :). This is definitely speedrunable :P. I would've loved if it had any audio. A splash sound when you drown for example.

I drowned so many times, and every time was a laugh. It was fun to move around so quickly trying to beat my score :)

I like the twist that if you try to go into dry land or the water on any other tile other than the beach tile you crash or sink. However, movement can be delayed at times making me lose in a way that felt unfair because the input was not responsive enough. Congrats on learning something new and submitting a game