Ever spotted a honeycomb-like mound on the beach and wondered what it was? It's a reef built entirely by worms!

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

Ever noticed lots of little white spirals on seaweed fronds on rocky shores? These are tiny tube worms!

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

The ragworm is highly common on our shores, though rarely seen except by the fishermen that dig them up for bait.

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

Red-necked grebes occasionally attempt to nest in the UK, but they're more often seen as winter visitors to sheltered coasts.

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.

This well-camouflaged woodpecker used to be a common breeding bird in Britain, but is now only likely to be seen passing through on migration.