The Aquarians.
We could not study in depth the sea and shellfish without the aquariums where to live our observations. We learned so much about these particular ecosystems, and we want to offer our suggestions on the subject. The aquarium can also be homemade, but we have not ever ventured into this: we have instead bought two with the aid of school funds. After some tests and experiments we have learned how to make them live a long while in similar situations.