I like this kind of experimental games, curiously I have seen games with similar control and aesthetics in some modern art museums, although those tend to be somewhat more obtuse in what they show.
On the other hand, it reminded me of moments of going for a walk with friends and being a bit silly to have a good time, although instead of the beach we ended up visiting one of the numerous mountains in the city or visiting an ecological park, although I I would have added a grill with some meat to the game for the final part by having the museum finished to celebrate, although that is probably just my custom.
Some auditory effects would have been nice for the game, at least a sound of waves or a sound when picking up an object, but other than that I thought it was a good personal game.