Hi!
Went to the end. Thematic and innovative game! In addition, the idea itself is interesting and thought-provoking. Graphics and music harmoniously complement the gameplay.
Over time, it becomes a little boring, maybe if you add some unforeseen situations like a sudden oil leak or an earthquake, or an influx of sharks - it would add to the gameplay.
I would like to see a start screen (menu) with control information and the ability to turn on/off the sound.
Nice game, congratulations!
P.S.
What did you use to develop the graphics?
P.P.S.
One of my dreams is to explore the seabed :).