Wavy hair-grass
Wavy hair-grass lives up to its name: its fine, hair-like leaves and delicate flower heads can be seen shaking in the breeze of a windswept moorland or heathland.
Waxwing
The waxwing is a colourful winter visitor. It can often be spotted in large flocks in berry-laden bushes in towns, car parks and gardens.
Wayfaring-tree
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.
Weasel
Weasels may look adorable, but they make light work of eating voles, mice and birds! They are related to otters and stoats, which is obvious thanks to their long slender bodies and short legs.
Welsh poppy
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.
What is a Nudibranch?
Nudibranchs, also known as sea slugs, are much like their land-based relatives that you may spot in your garden. But, unlike your regular garden slug, the nudibranch can incorporate the stinging cells from their prey into their own bodies – giving them a defence against predators!
Wheatear
A summer visitor, the wheatear is a handsome chat, with black cheeks, white eyestripes, a blue back and a pale orange chest. Look for it on upland heaths and moors.
Whelk
The common whelk is the largest sea snail found in UK seas, though you're more likely to find the dry balls of empty whelk egg capsules washed up in strandlines.
Whimbrel
The whimbrel is very similar to the curlew, but a little smaller and with a striking face pattern. Its eerie call is a series of seven whistles; listen out for it around the coast as its passes through on migration.
Whinchat
The whinchat is a summer visitor to UK heathlands, moorlands and open meadows. It looks similar to the stonechat, but is lighter in colour and has a distinctive pale eyestripe.
Whirligig beetle
Ever wondered what that little black dot whirling in circles on the top of the water of a pond is? Those are whirligig beetles! Often seen shooting across the water surface on the hunt for its next meal.
Whiskered bat
The small, shaggy-furred whiskered bat roosts in all sorts of houses, old or modern. It is similar to the Brandt's bat and they often roost together, but in separate colonies. It feeds along familiar routes, such as hedgerows and woodland edges.