Sea potatoes may have a funny name, but they are perfectly adapted for life in the sand. They are a type of sea urchin that live in a burrow in the sand, feeding on dead animals and plants using…

Beavers are the engineers of the animal world, creating wetlands where wildlife can thrive. After a 400-year absence, beavers are back in Britain!

The marsh hair moss is the largest moss in the UK. Look out for it in damp woodland and on boggy heathlands where it forms large, green and spikey 'cushions'.

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.

You are most likely to spot the cat flea if you have pets. It will feed on cats, dogs and people, although it can't live on us. It is a pest and needs to be controlled in the house for the…

The common green lacewing is a lime green, delicate insect, with translucent, intricately veined wings. It is common in gardens and parks, where it helps to control aphid pests.

There are several species of spider that live in our wetlands, but the water spider is the only one that spends its life under the water. In its pond habitats, it looks silvery because of the air…

A scarce tree of England and Wales, the Large-leaved lime is the rarest of our native limes. It is tall and broad, and can be found in forests and parks, where it is frequently planted.

Listen out for the 'drumming' sound of a male snipe as it performs its aerial courtship display. It's not a call, but actually its tail feathers beating in the wind. Snipe live on…