Cuttlefish can change colour in 200 milliseconds, as fast as a human can blink. Cuttlefish have W-shaped pupils, which are thought to help control the intensity of light entering the eye. Cuttlefish ...

Colour change in animals can occur over different timescales and aids communication and camouflage. Direct evidence of the associated energetic costs has been lacking, but now an experimental study of ...

In nature, survival isn’t always about being the fastest, strongest, or having sharp teeth. For many animals, it’s about blending in and adapting to their surroundings. One of the most amazing ways ...

New research into the anatomy of blue sharks (Prionace glauca) reveals a unique nanostructure in their skin that produces their iconic blue colouration, but intriguingly, also suggests a potential ...