I recently read Spineless: The Science of Jellyfish and the Art of Growing a Backbone by Juli Berwald (not to be confused with Spineless by Susan Middleton). Part memoir and part science writing, this book is very well-written, and moderately full of information about the oft-ignored jellyfish clan (some readers will find the combination of autobiography and science not to their liking). The book cover appears to be mostly derived from this Haeckel print:
I myself was fascinated by the jellyfish in the Monterey Bay Aquarium, but I did not fall in love with jellyfish the way that Juli Berwald did. This book does not quite do the job either, perhaps because of the distractions of the (not all that compelling) autobiographical material. It also seemed difficult to reconcile the author’s concerns about global warming with her high-carbon lifestyle.
Sea nettles at the Monterey Bay Aquarium (photo by “Omegacentrix”)
Still, this book is well worth a read. Other reviews of the book are linked from the author’s Wikipedia article.