One of the UK’s rarest marine species, this giant of the rocky shore is a very special fish.

The lightbulb sea squirt is common around much of the UK. Its easy to see where its name came from!

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.

The small white is a common garden visitor. It is smaller than the similar large white, and has less black on its wingtips.

This striking black-and-white moth flies during the day in open woodlands, moorlands, and bogs. It's most common on Scottish moors.

A strikingly beautiful fish, it is not hard to see where the ‘red’ mullet gets its name from!

The male purple emperor is a stunning butterfly with a brilliant purple sheen. Look for it feeding around the treetops in woodlands, or on damp ground, animal droppings or even carrion in the…

This slim fish is usually found on gravelly parts of the seabed, close to shore, but can turn up in rockpools.

This crab is common around all of the UK. If you've ever been rockpooling or crabbing, it's probably the shore crab that you've met.

Found in compost heaps and under stones in gardens, the flat-backed millipede is a common minibeast. It is an important recycler of nutrients, feeding on decaying matter.

These large rocky shore fish look like they belong in deeper waters, but they are the find of the day for any rockpooler!

This funny-looking fish certainly won't be winning any beauty pageants, but it's a real contender for Father of the Year!