Nudibranchs, also known as sea slugs, are much like their land-based relatives that you may spot in your garden. But, unlike your regular garden slug, the nudibranch can incorporate the stinging…

Annual meadow-grass is a coarse, vigorous grass that can be found on waste ground, bare grassland and in lawns. In some situations, it can be considered a weed.

These winter visitors are close relatives of the chaffinch and can often be found in the same flocks, where their white rump and nasal calls give them away.

This funny-looking fish certainly won't be winning any beauty pageants, but it's a real contender for Father of the Year!

Often spotted in large flocks, the fieldfare is an attractive thrush. It is a winter visitor, enjoying the feast of seasonal berries the UK's hedgerows, woodlands and parks have to offer.

The tiny firecrest vies with the goldcrest for the title of the UK's smallest bird. Once just a visitor, the firecrest can now be found breeding in woodlands in the south of England.

A late-flowering plant, Autumn gentian displays pretty, mauve, tube-like flowers atop its reddish stems. It favours dry, chalk grassland and sand dune habitats.

The raven is famous for being the imposing, all-black bird that guards the Tower of London. Wild birds live in forests, and upland and coastal areas in the north and west of the UK.