Parsley fern lives up to its name - the pale green fronds form in clusters among rocks and look just like parsley. Look out for it in upland areas, particularly in Wales and Cumbria.

This huge gull can be seen around most of the UK's coasts in summer, with some venturing inland in winter.

This dashing diving duck is a winter visitor to the UK's seas, coastal lakes and occasionally inland water bodies.

With a torpedo-shaped body and long, narrow wings, the privet hawk-moth is a striking garden visitor. But the caterpillars really stand out: lime-green, with purple streaks and a black hook at the…

Found along the coast all year-round, the dunlin is a small sandpiper that breeds and winters in the UK. It can be seen in its upland breeding grounds in summer, when it turns brick-red above and…

This sponge is found on rocky shores around the UK and looks like a thick bready crust (if you use your imagination a bit!).

This hefty diving bird is a winter visitor to the UK, where it can be seen around the coast or occasionally on large inland lakes.