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.

A breeding bird of fast-flowing, upland rivers, the grey wagtail can also be seen in lowland areas, farmyards and even towns in winter.

This sooty-black, day-flying moth is active on sunny days, rarely settling in one place for long.

This large round urchin is sometimes found in rockpools, recognisable by its pink spiky shell (known as a test).

A common and stocky bird of our rocky coasts, the rock pipit can nearly always be seen close to the sea. It is a bit smaller than a starling.

The common octopus is a highly intelligent, active predator. It even has a secret weapon - special glands produce a venom that it uses to incapacitate its prey!

Selfheal is a low-growing, creeping plant that likes the short turf of grasslands, roadside verges or even lawns. Its clusters of violet flowers appear in summer.

A dark, stocky warbler, the Cetti's warbler is most likely to be heard, rather than seen - listen out for its bubbling song among willow, marsh and nettles.

The song thrush is a familiar garden visitor that has a beautiful and loud song. The broken shells of their blue, spotty eggs can often be found under a hedge in spring.