Vanadium and chromium are a set of a pair in a way. They both produce colourful salts. But vanadium tends to be a bit more uniform, and thus I chose to use the mayfly as it’s animal. They come in all sorts of colours and sizes and often live short lives. Chromium has even more different salts and is commonly used in paint, stains, tanning, plating and many other uses. The mantis shrimp is one of the most curious creatures in the ocean. It has eyes that pick up colours well beyond the red, green, yellow and blue we can perceive. They can also produce an almost bullet-like snap with their claws that they use to stun their prey.