This dazzling moss grows in dark places, catching any faint light to glow a golden-green.

A bushy brown seaweed that appears bright blue underwater.

Dyer's greenweed is a classic plant of hay meadows, heaths and open woodlands. It has upright stems with loose clusters of bright yellow, pea-like flowers in summer.

There are several species of cucumber spider, recognised by their bright green abdomen.

The bright purple flowers of this perennial herb can be seen in a range of grassy places.

The bloody henry starfish is normally a bright purply-red colour and is found all around the UK.