Your art looks really nice and the theme flows well. Some ambient melodies and sounds would really add to the feel. I love how many cannons I could fit onto my ship hahaha!
I feel like the text was a bit hard to pay attention to, it seemed to draw focus away from the gameplay instead of flowing with it. Maybe some sort of interval or gap in the rocks would help.
The way the rocks blossomed was a really cool idea!
Some sort of closure to the game would really round it out nicely.