Sea of Zirun

You're swimming in the Atlantic Ocean and are suddenly sucked underwater by a "whirlpool". Down there you can swim around without worrying about a lack of oxygen, and get killed without warning when you enter certain rooms, or enter other rooms with certain items in inventory.

Quill games, or memory-restricted games with a two-word parser in general, can have a certain charme. "Sea of Zirun" doesn't. It doesn't even have an "examine" command. The underwater setting with clams and seaweed and turtles and all is nice, but everything else is plain annoying.