The marsh hair moss is the largest moss in the UK. Look out for it in damp woodland and on boggy heathlands where it forms large, green and spikey 'cushions'.

A fierce pirate of the sea, the great skua is renowned for stealing fish from other seabirds and dive-bombing anyone that comes near its nests. It breeds on the Scottish Isles.

An uncommon tree of wet woodlands, riverbanks and heathlands, Alder buckthorn displays pale green flowers in spring, and red berries that turn purple in autumn.

This large anemone is found on rocky shores around the UK and is so called because its green spots and red body means it looks like a strawberry!

Look for the wood warbler singing from the canopy of oak woodlands in the north and west of the UK. Green above, it has a distinctive, bright yellow throat and eyestripe.

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.

A fleshy herb of the wet margins of brooks, streams and ditches, Brooklime can be seen all year-round and provides shelter for tadpoles and sticklebacks.

Sometimes called 'Marsh samphire', wild common glasswort is often gathered and eaten. It grows on saltmarshes and beaches, sometimes forming big, green, fleshy carpets.