Last month, Cassiopea andromeda, more commonly known as the upside-down jellyfish, were found to have similar sleep patterns to humans—but they do not have brains. Like humans, Cassiopea andromeda ...

A freshwater jellyfish originally from Asia is roughly the size of a penny and is a rare sight in the Great Lakes. Most of the time, they're stuck to the bottom of the lake as polyps, according to the ...

There are so many different types of jellyfish out there, boasting different sizes, shapes, colors, and more. The immortal jellyfish is one of these unique jellyfish with a certain skill not often ...

A population of invasive freshwater jellyfish, known as the peach blossom jellyfish, is rapidly multiplying in British Columbia lakes. According to recent research from the University of British ...