Thank you, I really appreciate your feedback!
The theme 60 seconds made me feel like trying to build an entire game that fits into about a minute and still feels complete. I did have plenty of ideas that would have perhaps made a more compelling game overall but I felt would have taken away from the very short game play loop. The radar overlay is similar to the radar in Radar Rat Race, only instead of being off to the side I overplayed it on the game play area.
After I had the game working and looking nice I spent a lot of time polishing the feel of the swimming and finding edge case rough edges I could sand down with extra programming effort, which is a pretty big departure from my usual style of "good enough" programming. Ha ha.