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.

This birch-loving moth can be seen flying on sunny days in early spring.

This bog-loving butterfly is mostly found in the north of the UK, where it takes to the wing in summer.

This shy fish lives in burrows in muddy seafloors, sometimes sharing them with nephrops.

Herb-Paris has four oval leaves set in a cross, with an understated crown of yellow-green flowers rising from the middle. This makes it quite a distinctive plant of ancient and damp woodlands on…