I love the attention to details : the little story, the waving of the plants and everything under water.
The sound is really good and puts you in the mood, the gameplay is super easy to understand but still nice with the powerups system, and there is even a story.
The only downside is that it isn’t 1-Bit, if I was you I would have removed all the colors to make the game fit the jam rules, and then release a more polished version with colors after.