fittingly called World Jellyfish Day. In honor of the holiday, here are 25 stunning images and facts about these incredible creatures.

Jellyfish refuge. A young trevally (Caranx ignobilis) seeks shelter inside the bell of a jellyfish, whose stinging tentacles deter predators. Dozens of fish species are known to turn to jellyfish ...

Jellyfish fossils are hard to come by because their soft tissue doesn’t leave skeletal remains, but traces of them have been found in sediment from 500 million years ago. Froilan Robas ...

This cute paper bag jellyfish craft for kids is a fun project to learn more about these kids under the sea. Here is how to ...

Every summer more and more jellyfish are being washed up onto the shorelines around Wales. During Springwatch 2009, Simon King's team sought out jellyfish swarms but weren't lucky enough to find ...