This brilliant red and white sea slug would make the perfect nudibranch for a Christmas card image or perhaps a football team mascot!

The Norway spruce was introduced into the UK from Scandinavia in the 16th century. It is familiar to us all as the 'original' Christmas tree and displays hanging, reddish-brown, oblong…

The fluffy, white seed heads of traveller's-joy give it the evocative, alternative names of 'old man's beard' and 'Father Christmas'. A climbing plant, it can be seen…

Kissing under the mistletoe is a much-loved Christmas tradition, making this plant familiar to us all. It actually grows as a parasite on trees - look for it hanging off branches in large balls…

The much-loved robin is a garden favourite and one of our most familiar birds, adorning Christmas cards every year. It is very territorial, however, and will defend its post with surprising…

Holly is a much-loved evergreen tree - its shiny, spiky leaves and bright red berries being a favourite in Christmas decorations. Found in all kinds of habitats, it provides an important winter…

This small finch nests on moorlands and coastal crofts, spending the winter on the coast. The UK population has declined dramatically.