A closeup shot of a glowing blue jellyfish in black water. One species stands out for its extraordinary ability: Turritopsis dohrnii, also known as the immortal jellyfish. This fingernail-sized ...

The infamous box jellyfish developed its frighteningly powerful ... Australia and throughout the Indo-Pacific. They are pale blue and transparent in color and get their name from the cube-like ...

A number of mauve-hued 'night light' jellyfish were spotted on the Durban shores on Thursday, 16 January 2025.

They’re often seen in waters around the UK and Ireland. The lion's mane jellyfish's tentacles can reach over 30 metres in length – that’s longer than a blue whale. The remarkable hydrozoan Turritopsis ...