Find out everything there is to know about jellyfish and stay updated on the latest jellyfish news with the comprehensive articles, interactive features and jellyfish pictures at LiveScience.com. Learn more about these fascinating creatures as scientists continue to make amazing discoveries about jellyfish.
Teensy parasites called "mucus animals" are actually degenerated jellyfish that sport little stinging cells but no mouth or gut. The finding could expand scientists' definition of the animal kingdom, the researchers say.
Ancient gelatinous animals that resemble Christmas tree ornaments were protected by hard, spiny skeletons and lacked the trademark tentacles of today's jellies, fossils of the long-dead jellyfishlike creatures suggest.
As injured moon jellies (Aurelia aurita) swim, their dynamic body pulsations will drive remaining legs into a symmetrical configuration. Such ‘symmetrization’ is a never-before seen self-repair strategy.