Fun! I love the art, especially the otter. Something about some of the art gives me Insaniquarium vibes, which is awesome.
Gameplay is simple, but fun. I found that quite a bit of the challenge was in figuring hitboxes, which didn't always feel too great. For example, there were several times where I felt like I had collected an orange rock, but instead I just watched it pass me by (for the hundredth time, haha). Maybe part of this is just that I'm not that great at the game though.
Overall, it kept me coming back, which is a great sign that you're onto something with this! Good work!