From publisher blurb:
Races of Center Space 5 is the second volume in a new series playable races for the 5th Edition rules. Each race in the series is from the Center Space setting. While the Center Space is a science fiction setting, the races can easily be used with other genres.
This volume presents the Nimahnse — an ancient race of jellyfish-like creatures whose minds are connected through a vast collective consciousness.
This book contains racial description and a new racial feat for the Nimahnse, as well as suggestions for adapting it other settings.