This seagrass species is a kind of flowering plant that lives beneath the sea, providing an important habitat for many rare and wonderful species.

The dazzling silver-studded blue is a rare butterfly of heathland habitats, mainly in southern England. It has undergone severe population declines in recent years.

The Purple hairstreak is an elusive butterfly with a brilliant purple sheen. It is entirely reliant on oak trees and can be spotted chasing around the treetops in woodlands and parks.

The moth-like dingy skipper is a small, grey-brown butterfly of open, sunny habitats like chalk grassland, sand dunes, heathland and waste ground.

A well-travelled migrant, the painted lady arrives here every summer from Europe and Africa. This beautiful orange-and-black butterfly regularly visits gardens.

Mae'r gwyn bach yn ymwelydd gardd cyffredin. Mae'n llai na'r gwyn mawr tebyg, ac mae ganddo lai o ddu ar flaen ei adenydd.

The green hairstreak is the UK's only green butterfly. Look out for the vibrant, metallic sheen of the undersides of its wings on grassland and moorland, and along woodland rides.

The black hairstreak is a rare butterfly that is restricted to woodlands and hedgerows containing blackthorn - the foodplant of the caterpillar. It is both elusive and hard to tell apart from…

Often found basking on tall grasses, or buzzing between stems, the small skipper is a small, orange butterfly. It prefers rough grassland, verges and woodland edges.

The pearl-bordered fritillary is a striking orange-and-black butterfly of sunny woodland rides and clearings. It gets its name from the row of 'pearls' on the underside of its hindwings…