This small sea snail is easily identifiable by the 3 brown spots on the top of its shell.

A small, but feisty scavenger, this carnivorous sea snail does not let anything go to waste!

Like many of our farmland birds, the yellowhammer has declined in number in recent years. Spot this bright yellow bird singing from the top of a bush or fence, or in a mixed-species flock in…

This small, white heron is an increasingly common sight in parts of the UK as it spreads north from continental Europe.

This small, round sea urchin is (unsurprisingly!) green in colour and can be found on rocky shores around the UK.

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

This large shrike visits the UK in small numbers each year, passing through on migration or spending the winter here.

This small finch nests on moorlands and coastal crofts, spending the winter on the coast. The UK population has declined dramatically.

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