Very very fun. The hitbox on the left side extends a little too far. It might be because the tail also extends further than the nose so the hitbox is only correct when the shark is facing the right. Consider either flipping the hitbox too or parenting the sprite to the hitbox so that you only need to flip the hitbox. It is also inconsistent sometimes, but I want to emphasize just how fun it is. You could totally make this into a really fun, full, simple game. Very nice work on the concept.