The green hairstreak is the UK's only green butterfly. Look out for the vibrant, metallic sheen of the undersides of its wings on grassland and moorland, and along woodland rides.

This little fish is found in rockpools during the summer months and has a clever adaptation that stops it being swept away by strong waves - their pelvic fins are fused to form a sucker that it…

The silver-washed fritillary gets its name from the silver streaks on its underside. It is on the wing in summer, preferring sunny glades in woodlands. Despite declines, its range has spread over…

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…

Saw-wort gets its common name from the serrated, saw-like edges to its leaves. It is a plant of unimproved hay meadows and woodland edges, its purple, thistle-like flowers appearing over summer.…

A common plant of disturbed ground like roadside verges and field edges, the spear thistle has purple, fluffy flower heads that appear in summer. Its flowers attract insects and its seeds feed…

Famous for its fearsome jaws, the stag beetle does not have the bite to match. Look for it in woods, parks and gardens in South East England in summer. Males display their massive jaws to attract…

The European larch was introduced into the UK from Central Europe in the 17th century. Unusually for a conifer, it is deciduous and displays small, greeny-red cones on brittle twigs.

The green-veined white is a common butterfly of hedgerows, woodlands, gardens and parks. It is similar to other white butterflies, but has prominent green stripes on the undersides of its wings.…

As its name suggests, the scarlet elfcup is a bright red, cup-shaped fungus. It is widespread, but scarce, and can be found on fallen twigs and branches, in shady, damp places.

An attractive, green-and-yellow bird, the siskin regularly visits birdtables and feeders in gardens. Look for the bright yellow barring on its black wings, and the black crown of the males.