As a perfectionist this was at the same time very fun and a nightmare, lol
At first I had some trouble understanding what I was supposed to clean, so I explored the whole space and eventually tried to clean the circular spots on the cube and understood I had to be very very close for it to work.
The slow movement speed (even though accurate for the environment) made it a bit frustrating as was the fact that the game stopped before I had completely finished cleaning the last item hehe.
The fishes and corals are super cute and the effect of the light through the water is phenomenal!!