Anatomy Looking more like an intricate lava lamp or perhaps an enormous squid-like sea creature, the image precedes an introduction to a short primer of jellyfish anatomy.

The American Museum of Natural Historynoted in an article about jellyfish anatomy that all true jellyfish share a few key characteristics, including the shape of their umbrella-like bodies or "bells." ...

Scientists have discovered the oldest swimming jellyfish species that ever lived over 500 million years ago, an advance that sheds more light on the origin of the earliest animal species on Earth ...

Researchers have mapped the distribution of a jellyfish subspecies and found that creatures which lack a distinctive "knob" are somehow prevented from leaving the Arctic.