The muntjac deer was introduced into the UK from China in the 20th century. It has gained a stronghold in southeast England, where it can cause damage to our woods through browsing.

Barnacles are so common on our rocky shores that you've probably never really noticed them. They're the little grey bumps covering the rocks that hurt your feet when you're…

As its name suggests, giant hogweed it a large umbellifer with distinctively ridged, hollow stems. An introduced species, it is an invasive weed of riverbanks, where it prevents native species…

The fearsome common backswimmer hunts insects, tadpoles and fish. It uses its oar-like legs to swim upside-down under the water's surface where unsuspecting prey can be found.

It’s easy to see where these butterflies get their name – the males have bright orange tips on their wings! See them from early spring through to summer in meadows, woodland and hedges.

The most commonly encountered ray around the British Isles, it's easy to see where the thornback ray got its name from - just check out the spines on its back!

The bee orchid is a sneaky mimic - the flower’s velvety lip looks like a female bee. Males fly in to try to mate with it and end up pollinating the flower. Sadly, the right bee species doesn’t…

The eel is famous for both its slippery nature and its mammoth migration from its freshwater home to the Sargasso Sea where it breeds. It has suffered dramatic declines and is a protected species…