Think you know all there is to know about jellyfish? Think again. These simple invertebrates are a lot more complex than you might realize. Jellyfish are unusual creatures. They’re neither fish nor ...

Jellyfish are some of the Earth's most ancient extant animals. They're also immensely diverse—most organisms that are called jellyfish are part of the phylum Cnidaria, which includes more than 10,000 ...

Jellyfish are some of the most fascinating and mysterious creatures in the ocean. While many people are familiar with the common jellyfish, there are countless lesser-known species that are just more ...