An base that you can put many different minifigs in.
In this I included 6 minifigures: 2 girls and 3 boys, and one mermaid.
In this set it has 5 different diving suits for each minifigure and beds for each. The commander has a different set of clothes and both girl minifigs have 2 different hairstyles.
In this set there is a kitchen area, 3 (technically 2) bedrooms, and a diving suit room. It comes with a simple submarine for discovery and that attaches to the base through a system that makes it so you can have the submarine attached and waiting or take it off and play with it. The roof opens up so you can play with the minifigures inside. I hope you support this project.