If you spot a crawling shell next time you're at the seaside, take a closer look… it might be a hermit crab!

This worm builds its own home out of bits of shell and sand. It can be spotted on the shore all around the UK.

This bumpy shell lives up to its name and lives partly buried in the seabed along the west coast of Great Britain.

Pe baech chi’n codi carreg yn yr ardd, gobeithio y byddech chi’n dod o hyd i lawer o wrachod y lludw. Mae gan y trychfilod gwydn yma arfogaeth fewnol ac maen nhw’n hoffi cuddio mewn llecynnau…

Found on rocky shores and seabeds, the Keyhole limpet gets its name from the little hole at the tip of its shell.

One of the prettiest hardy ferns, the lady fern is delicate and lacy, with ladder-like foliage. It makes a good garden fern, providing attractive cover for wildlife.

A diminutive but aggressive predator, the three-spined stickleback hunts tadpoles and small fish. It is also known for fiercely protecting its nest of eggs until they hatch. Look for it in ponds,…

The much-loved robin is a garden favourite and one of our most familiar birds, adorning Christmas cards every year. It is very territorial, however, and will defend its post with surprising…

Field elm suffered declines due to the devastating effects of Dutch elm disease, but can still be found across much of the UK.

Roedd morgathod brych bach yn arfer cael eu galw’n forgwn brych lleiaf – ac efallai mai felly’r ydych chi’n eu hadnabod orau. Yr un siarc yw hwn, ond gydag enw gwahanol!