This small duck is an uncommon winter visitor to the UK, where they're usually found on lakes, reservoirs and gravel pits.

False widow spiders are often the subject of unflattering headlines, but in reality they're unlikely to bite humans.

Barnacles are so common on our rocky shores that you've probably never really noticed them. They're the little grey bumps covering the rocks that hurt your feet when you're…

Red-necked grebes occasionally attempt to nest in the UK, but they're more often seen as winter visitors to sheltered coasts.

Look out for the bright red eyes of this speedy crab in rockpools - but be careful, they're notoriously feisty and will give a painful nip!