Blue blood may look alien, but it’s one of evolution’s most elegant solutions to life in extreme environments. Here’s how ...

Some animals do not have red blood like humans. From spiders to octopuses, their copper-rich blue blood helps them survive ...

When we think of blood, the colour red usually comes to mind. But in the animal kingdom, some creatures have blood that ...

The ocean is home to some of the most stunning colours in nature, but few are as mesmerising as the vibrant electric blue seen only in the rarest of the rarest animals. These creatures seem as if they ...