Look for the Yellow water-lily in still and slow-moving water, such as ponds, ditches, lakes and canals. Its lily pads and cupped, yellow flowers float at the water's surface.

An uncommon tree of wet woodlands, riverbanks and heathlands, Alder buckthorn displays pale green flowers in spring, and red berries that turn purple in autumn.

These colourful little fish are a delight for snorkellers or shallow water divers to photograph, rarely being scared off by their presence!

The wayfaring-tree is a small tree of hedgerows, woods, scrub and downland. It displays creamy-white flowers in spring and red berries in autumn, which ripen to black and are very poisonous.

The lesser spotted woodpecker is the smallest of the UK's woodpeckers. Listen out for its drumming, which is quieter than that of the great spotted woodpecker, in woodland, parks , orchards…

Small-spotted catsharks used to be called lesser-spotted dogfish - which might be what you know them best as. It's the same shark, just a different name!

Look out for the feathery leaves of Spiked water-milfoil just below the surface of streams, ditches, lakes and ponds; its red flowers emerge from the water in summer. It provides shelter for a…

Bittersweet is a nightshade, so is toxic; its bright red berries may be tempting, but can cause serious illness. Found in hedgerows and gardens, it has purple flowers with yellow stamens.

This fluffy moth is one of the few species that fly in winter.

The long-winged conehead is so-named for the angled shape of its head. It can be found in grasslands, heaths and woodland rides throughout summer.

A short, but pretty plant of unimproved grasslands, the Green-winged orchid gets its name from the green veins in the 'hood' of its flowers. Look for it in May and June.