The linnet can be seen on farmland and heathland across the UK. But, like so many other farmland birds, linnets are declining rapidly, mainly due to agricultural intensification.

The chocolate-brown, plump dipper can often be seen bobbing up and down on a stone in a fast-flowing river. It feeds on underwater insects by walking straight into, and under, the water.

Although they might not look it, sea cucumbers like this one belong to the Echinoderm group and are therefore closely related to starfish and sea urchins

This bumpy shell lives up to its name and lives partly buried in the seabed along the west coast of Great Britain.

This large, fluffy-looking moth is on the wing in July and August, but you might spot a caterpillar at almost any time of year.

One of the few moths that fly in winter, often seen in car headlights.