Blue Sea is a holosseum stage in Custom Robo Arena. The field looks like the bottom of the ocean floor. It is small and circular in shape.
|Player 1||Player 2|
|Small cube||All the way to the left.||?|
|Medium cube||All the way to the left.||?|
|Large cube||All the way to the left.||?|
This arena is small, and packed with obstacles, including several fish that move slowly around the inner area.
Be careful when using bombs with a large blast radius, as they can easily backfire and damage you, as well.