The integral jellyfish is a new hydrozoan species found in the northwest Pacific off the coast of Japan. Photo by Sugimoto, Izumi, Collins (2025) Nearly seven years later, Sugimoto, Collins ...

The porpita porpita, also called the blue button hydrozoan, looks like a jellyfish, but the mostly harmless creature is actually a collection of cells. The Harte Research Institute for Gulf of ...