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 large brittlestar can be found in rockpools around much of the UK, but be gentle - its arms are very brittle and will break off if disturbed.

This long-lived bivalve can be found buried in the sand on the south and west coasts of the UK.

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.

A small colourful sea slug that can be found grazing on sea mats on the rocky shore and beyond the low water mark.

Their long narrow shells are a common sight on our shores, especially after storms, but the animals themselves live buried in the sand.

Violet ground beetles are active predators, coming out at night to hunt slugs and other invertebrates in gardens, woodlands and meadows.