I began freediving as a way to approach an inaccessible space that not only was physically beyond my limit, but was beyond any type of experience I could imagine, beyond any place I could imagine. I could not picture the vastness, the nothingness, the weight of it, or the scale of it in relation to myself. It was all an abstract language. This space (the deep) seemed to me to be representative of something that is totally unknown, its power existing in its inaccessibility, in its un-knowability. 

This book and the projects and research surrounding it seek to define the space of the deep as a space which is just beyond human limit, where one can go, but cannot stay, and which becomes accessible but for only as long as you can hold your breath.