The jellyfish itself is made of two parts: the peduncle, or stalk, and the calyx, or web of arms and tentacles. The new species has eight arms, each covered in white dots and with “pad-like adhe ...

“Jellyfish are gelatinous and jelly-like,” explains Miranda Lowe CBE, our Principal Curator of Crustacea and Cnidaria. “They have a curved, bell-shaped body with tentacles hanging down from the ...

In some species the oral arms have mouths of their own. Jellyfish like the dreaded Portuguese man-of-war are also related to corals, but they’re part of a different subgroup, the siphonophores ...

Scientists explored the seafloor after an iceberg broke off the Antarctic ice sheet. They were shocked by what they found.

The jellyfish then uses its frilled arms to scoop the prey into its mouth. The sting of the lion's mane jellyfish is a danger to some and a boon to others. Tiny sea creatures like juvenile whiting ...

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 ...

Hanging from the bell are tentacles lined with nematocysts, specialized stinging cells. According to the AMNH: Among their many tentacles, some jellyfish have parts known as oral arms. These long ...