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

The ocean sunfish is the second largest bony fish on the planet and visits UK seas during the summer months to feast on jellyfish.

Living up to its name, the bullhead has a characteristically large, flattened head and a tapering body. Look out for it in fast-flowing, stony rivers and streams.

Escaped or intentionally freed from fur farms in the 1960s, the American mink is now well established in the UK. Its carnivorous nature is a threat to our native water vole and seabird populations…

This little cuttlefish really lives up to its name - it only reaches about 6cm long!

The easiest way to find out if the nocturnal and well-camouflaged nightjar is about is to listen out for its distinctive 'churring' call at dusk. A summer visitor, it is most numerous in…

The pink-footed goose is a winter visitor to the UK, feeding on our wetland and farmland habitats. About 360,000 individuals spend the winter here, making it a really important destination for…

The diminutive common shrew has a distinctively pointy nose and tiny eyes. It lives life in the fast lane, eating every 2-3 hours to survive, and only living for a year or so. Look out for it in…

The diminutive pygmy shrew has a distinctively pointy nose and tiny eyes. It lives life in the fast lane, eating every 2-3 hours to survive, and only living for a year or so. Look out for it in…

Living up to its name, the hairy violet is covered in fine hairs. Look for its delicate, violet flowers blooming from March to June on chalk grasslands, in particular.