Here's a corrected version of the text with spelling and grammar improvements:
Great start! It was fun exploring the depths, and I liked the music shifts and how it gets darker—plus the surprise shark!
I don't think you were able to implement the 'pass out' mechanic, as I tested going straight down and straight up again and didn't see much punishment on the resource management side.
Would love to see the gameplay supported by objectives, goals, missions, or some small story that moves it along.
Overall, a good concept piece!