This jellyfish species, reaching up to 7 inches in diameter, is identifiable by its visible stomach and gonads. The many-ribbed jellyfish uses bioluminescence as a defense mechanism against predators.

The National Oceanic and Atmospheric Administration (NOAA) spotted a surreal new species of jellyfish during an expedition to the "Enigma Seamount," a ridge in the Marianas Trench. The colorful ...

Jellyfish are known for drifting to and fro at the whim of ocean currents—but not all species are so passive. The millions of golden jellyfish that pack Palau’s Jellyfish Lake spend much of ...

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 scientists named the jellyfish Santjordia pagesi because of its bright red stomach that resembles the Cross of St George ...