Despite its dazzling colouration, this fabulous nudibranch can be easily missed, due to its small size!

This well-camouflaged wader is a winter visitor to the UK, where it can be seen feeding on wetlands with a distinctive bobbing motion.

The streamlined red-breasted merganser is a handsome bird and a great fisher - its long, serrated bill helps it to catch and hold its slippery fish prey. It is most commonly spotted around the…

The all-black carrion crow does not nest in colonies like the similar rook. It can be seen almost everywhere.

This small duck is an uncommon winter visitor to the UK, where they're usually found on lakes, reservoirs and gravel pits.

Although introduced by humans, the fallow deer has been here so long that it is considered naturalised. Look out for groups of white-spotted deer in woodland glades.

This brown seaweed lives high up on rocky shores, just below the high water mark. Its blades are usually twisted, giving it the name Spiral Wrack.

This common hoverfly can be recognised by the dark markings behind its head, which often resemble the Batman logo.

As the name suggests, this beautiful brown butterfly is most common in Scotland, though it can also be seen in northern England.