Found in every ocean the world over, jellyfish come in a dazzling array of colors, shapes, and sizes. This visually breathtaking book showcases 100 species of these strange, ancient creatures—from the ubiquitous Aurelia to the enigmatic Velella—along with astounding facts about jellyfish: Some are so delicate that they shatter with the smallest disturbance to the water, others can withstand almost any temperature, and some are biologically immortal.