an isolated photoreceptor will do. Hydra, a small relative of jellyfish, has no eyes, but it does have photoreceptors in its body. Todd Oakley and David Plachetzki from the University of ...

Box jellies are highly advanced among jellyfish. They have developed the ability to move rather than just drift, jetting at up to four knots through the water. They also have eyes grouped in ...

Jellyfish don’t have bones, brains, hearts, teeth or blood. However, what they do have is a network of nerves called a nerve net. This allows them to process information including light levels, ...

The String of Pearls Jellyfish (Apolemia uvaria), which is also known as string jellyfish or barbed wire jellyfish, has ...

Golden Jellyfish have evolved to do something that very few other animals ... Brian Cox shows the stages of the evolution of the eye, from a primitive light sensitive spot, to a complex mammalian ...