This small, white heron is an increasingly common sight in parts of the UK as it spreads north from continental Europe.

This pretty, speckled moth is now a rare sight, found only in a few parts of southern England.

This slim fish is usually found on gravelly parts of the seabed, close to shore, but can turn up in rockpools.

The UK's largest native grasshopper is also one of its rarest, found only on wetlands in a few parts of England.

The Welsh poppy is a plant of damp and shady places, roadsides and hillsides. It is also a garden escapee. It flowers over summer, attracting nectar-loving insects.

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

This dainty white butterfly is now only found in a few parts of Britain, where it flutters slowly through woodland clearings.

Arrowhead is an aquatic plant of shallow water and slow-moving waterways. In bloom over summer, it displays small, white flowers, but it is the arrow-shaped leaves that are most distinctive.

Famed for its tapping in the middle of the night, supposedly heralding tragedy, the deathwatch beetle is a serious wood-boring pest. In houses, their tunnelling can cause major damage.

Bell heather is our most familiar heather. In summer, it carpets our heaths, woods and coasts with purple-pink flowers that attract all kinds of nectar-loving insects.

Cross-leaved heath is a type of heather that likes bogs, heathland and moorland. It has distinctive pink, bell-shaped flowers that attract all kinds of nectar-loving insects.