A cool short game!
The visuals are very simple, yet have their charm and the gameplay is straightforward. I loved the shark's design, it was unique and creepy. I think that the item placement and map layout could have been a bit more thought out, since simply sticking to the edges of the walls/ground made it easy to avoid the shark altogether. Then again, maybe I just got lucky with the AI spawn and patrol.
More sound effects and ambiance would've also been nice and made it feel more tense.
Great concept and a solid game!