Your invention is such a creative and exciting idea, Eve! I love how you've thought about helping scientists study water and animals, what an important mission. Using pedals to move and a wheel to steer makes it sound like a fun and practical vehicle. And the idea of fish helping it move? That’s so imaginative! It shows you're thinking about how nature and technology can work together. Keep dreaming and inventing, I can't wait to see what you come up with next!