How many players can participate in the Capstone Games Ark Nova Marine Worlds Expansion?

The game can be played by 1 to 4 players.

What new features does the Marine Worlds expansion introduce to Ark Nova?

The Marine Worlds expansion enhances your experience of Ark Nova by introducing new marine life into your zoos, new Action cards with extra abilities, a 4th University with different variations, and upgraded wooden components for the track markers and conservation projects.