The white-clawed crayfish is a freshwater, bronze-coloured crustacean with pale undersides to its claws - hence the name. It is under threat from an invasive and introduced species of crayfish.…

Spiny lobster, crawfish, crayfish, rock lobsters - many names, one animal! This pretty lobster was made extinct in many areas through overfishing, but is now making a slow comeback.

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

The large white is a common garden visitor - look out for its brilliant white wings, tipped with black.

At night, the pretty, white blooms of white campion produce a heady scent, attracting feeding moths. Look for this wildflower along hedgerows and roadside verges, and on waste ground.

The white admiral is a striking black-and-white butterfly with a delicate flight that includes long glides. It prefers shady woodlands where it feeds on bramble.

The striking black-and-white checks of the marbled white are unmistakeable. Watch out for it alighting on purple flowers, such as field scabious, on chalk and limestone grasslands and along…

So-named for the silvery-white appearance of its leaves, the white willow can be seen along riverbanks, around lakes and in wet woodlands. Like other willows, it produces catkins in spring.