Jellyfish: Jellyfish and sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria. Jellyfish ...

Even a boneless, gelatinous sack lacking a dedicated anus and brain needs its beauty sleep, a new study by researchers from Bar-Ilan University in Israel finds. Jellyfish sleep a third of every day ...

Our brains are filled with lots of specialized structures that do things like process visual information, handle memories, or interpret language. One of the ways we try to understand what a brain is ...

The alternative text for this image may have been generated using AI. Jellyfish include a diversity of species within the phylum Cnidaria that are distinguished, in maturity, by the distinctive ...

The cnidocytes -- or stinging cells -- that are characteristic of sea anemones, hydrae, corals and jellyfish, and make us careful of our feet while wading in the ocean, are also an excellent model for ...

Cnidarians lack true mesoderm, in the sense of a third germ layer that arises as a direct result of gastrulation. However, at the molecular level, muscle development in the medusa of the hydrozoan ...