It is monotypic, being represented by the single species Maiazoon orsaki, commonly known as the Orsak flatworm.

They inhabit the exposed edges of the reef crest and in boulders covered with coralline algae.

The background color can generally go from translucent cream to light brown with a fine median white line.

The white line starts back from the eye spots and ends just before the border of the posterior edge.

The circumference of the body is ornated with an orange-brown strip and highlighted on the outside by a fine black line.