|Image: ConstantineD via Flickr|
And then there's that fabulous name. It comes from their amazing speed and agility as they rush off from birds and other predators. Reaching 8 cm (3 in) across not including the legs, those beautiful eyes have to keep on the lookout for large carnivores. And of course, if you're so incredibly visible and evident you're gonna have to be light on your feet!
Luckily, the youngsters and gawky teenagers are black or dark brown. This works great for camouflage until they get their colours later on, even though it probably means they find the adults rather embarrassing.
|Image: mrccos via Flickr|
Juvenile Sally Lightfoot
I still think they're made of pure lava, though.