Charming game with fitting artstyle. Really fitting for the Jam Theme!
I like the idea, but I do find the gameplay a bit basic for my liking. I also found it a bit hard to notice what is trash and food (while swimming in the rough in the middle). I also found the challenge balance to be a bit weird (If I swim low it becomes easy, if I swim hight it becomes difficult + the fact you do not have any "checkpoints" in case you die)
With a little bit work on the player feedback (What is what and how does it affect me as the player with the use of visual and audible cues) and fleshing out the gameplay this could become a good mobile game!
Good work!