Fathom sleep cycles

Due to Fathom's lack of a true day and night cycle, Fathom's residents often follow one of two sleep structures that would be considered eccentric on Earth.

Pulsing sleep is the first type. Creatures with pulsing sleep take small 'naps' at regular intervals, taking longer and shorter naps at different times in a sort of rhythmic song that continues throughout their time. Fathom's time system is base 10; this originates from the common symbol of the elkar, one of the most common symbols that is noted throughout the world by sentient, record-keeping species. Thus