So, do you know who Jacques Cousteau was? He was a famous scientist and explorer who loved to learn about the ocean and all the creatures that live there!
Now, becoming Cousteau means that you want to be just like him and learn about the ocean and its creatures too. It's kind of like saying you want to be a doctor when you grow up - you have to learn a lot and practice a lot to become one.
To become Cousteau, you would need to study a lot about science, especially about the ocean and its ecosystem. You would also need to learn how to scuba dive so you can go into the ocean and see all the amazing creatures up close (but you would always need to have a grown-up with you to make sure you stay safe!).
You would need to have a lot of curiosity and be willing to explore and try new things. You might even need to learn how to speak different languages, because the ocean is all around the world and there are lots of different countries and cultures to learn about.
Becoming Cousteau is a big dream, but just like any other dream, if you work hard and never stop learning, you might just be able to make it come true!