The art style of this game is awesome! I really love the handmade assets - the character looks great, and the reflection of the boat against the water is very pretty as well. I thought the gameplay loop was pretty cute - I was also not fully prepared for night time, so it was actually a bit spooky the first time it switched to night. The atmosphere was really good, and switching to realistic pictures of fish was also a cool and uncomfortable touch - great work!
I would say that the gameplay got a bit monotonous after a little while. It seems like the boat gets automatically repaired when it isn't being attacked, but it seemed from the opening narration that the player was going to be responsible for repairing it as well. It could be cool if there were a different minigame to chase away the monsters and a different minigame to patch up the boat as well. Those could help add diversity to the gameplay potentially.
Great work!