This dazzling moss grows in dark places, catching any faint light to glow a golden-green.

This charming little warbler is an increasingly common sight in autumn, when migrants pass through the UK.

The river lamprey is a primitive, jawless fish, with a round, sucker-mouth which it uses to attach to other fish to feed from them. Adults live in the sea and return to freshwater to spawn.

This pretty, speckled moth is now a rare sight, found only in a few parts of southern England.

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.

Fir clubmoss is a primitive plant found in rocky, moorland and mountain habitats. The stems of this tufted, upright fern look like tiny conifers.

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

Native oysters are a staple of our seas and our plates - but our love of their taste has lead to a sharp decline all around the UK.

The small heath is the smallest of our brown butterflies and has a fluttering flight. It favours heathlands, as its name suggests, as well as other sunny habitats.