The atmosphere was definitely the strong suit of your game good job!
And the slight jumpscare actually got me as I was not expecting it at all.
You managed to put in a lot of systems for such a little game which I did not expect when looking at the screenshot.
Even though it's underwater the whole pacing (movement, flashlight targeting, distances) where a little bit too slow for my taste, but I get that's in part personal preference.
I encountered visual some issues, like weird stretching of some assets or that I could see below the ocean floor at one point. I assume these were probably related to me running the game on a different resolution than on your test device.
Also the flashlight-cone was actually covering the mines instead of revealing them ^^
A small annoyance were the dialogue triggers.
I wanted to explore the starting "zone" and ran multiple times into the dialogue trigger so I had to click through it I think 3 or 4 times. Also I get the use of oxygen tanks after the first one, no need to display the exact same message every time I approach a new one.
Overall a nice experience, thank you for making it.