This game is really neat! I've got quite a lot of feedback, but its because I think this game has a lot of potential! I think the plane controls very well and the animations on both the plane and the camera are really smooth even if the camera jitters too much when in gameplay. I also really like the voxel art style, I think I like the voxels so much I would've liked to see the water be voxel based so that it fits in better. Also I think the game isn't actually punishing enough, I think going underwater should definitely count as crashing rather than just letting you carry on.
Overall, I think if you tweaked some of these things and added some more islands this would genuinely be a fantastic game! I would love to see you come back to this project after the jam. Well done and keep it up!
P.S why does the happy cloud look so sad :(