Mae’r pryf copyn tŷ cawraidd yn un o'n infertebrata cyflymaf ni, yn rhedeg hyd at hanner metr yr eiliad. Mae'r pryf copyn mawr, brown yma’n troelli gwe sy'n debyg i gynfasau ac yn…

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

Their long narrow shells are a common sight on our shores, especially after storms, but the animals themselves live buried in the sand.

The spiny spider crab lives up to its name in every way! Their distinctive spiny shells are often found washed up on beaches.

The Yellow star-of-Bethlehem is a woodland plant that lives up to its name - it displays starry, gold flowers in an umbrella-like cluster in early spring.

Like many of our farmland birds, the corn bunting has declined in number in recent years. Spot this streaky brown, thick-billed bird singing from a wire or post - it sounds just like a set of…

Gellir gwełd y chwilod mawr, brown yma’n heidio o amgylch golau stryd yn y gwanwyn. Maen nhw’n byw o dan y ddaear fel larfa am flynyddoedd ac wedyn yn dod allan fel oedolion, mewn niferoedd mawr…

This large shieldbug lives up to its name, bristling with long pale hairs. It's a common sight in parks, hedgerows and woodland edges in much of the UK.

The large, dark grey water shrew lives mostly in wetland habitats. It's a good swimmer that hunts for aquatic insects and burrows into the banks.