Datum is a creature from the deep ocean that solves mysteries. This booklet goes in to depth about the important aspects of this new species. The booklet highlights what it is, its appearance, its specifications, a mystery that it has solved, and its discovery. The flow through the book is displayed with different depths of the ocean. From start to finish of the book the reader goes from the surface of the water to the deepest point of the ocean. The pages get darker and the content gets heavier towards the end. The last page shows compressed text to talk about the amount of pressure that is found at that depth of the ocean.