From Creatures Wiki
Shee kept the various sea-dwelling life forms they created. Along with some colourful sea critters, this scenic terrarium is home to a variety of machines useful for keeping fish populations up and contains a secret door to the Desert Terrarium. Norns and other creatures will drown underwater, unless they are genetically engineered to breathe both in and out of water.
Animals in the Marine Terrarium include the Rainbow Sharkling, Handle Fish, Clown Fish, Nudibranch, and many other varieties of fish. Also in the Marine Terrarium are multiple types of sponge and the Gumin Grass.
Flora and Fauna