The stately grass-of-parnassus displays pretty, white flowers with green stripes. Once widespread, it is now declining as its wetland habitats are disappearing.

The common mussel is a familiar sight on shores all around the UK and is a favourite food of people, seabirds and starfish alike.

The ragworm is highly common on our shores, though rarely seen except by the fishermen that dig them up for bait.

These little critters are related to the woodlice you find in your garden and play a very important role on rocky shores.

Mae'r siarc main yma’n cael ei enw o'r pigau o flaen ei asgell ddorsal. Gall ddefnyddio'r pigau yma i amddiffyn ei hun drwy gyrlio mewn bwa a tharo ysglyfaethwr.

Famed for its tapping in the middle of the night, supposedly heralding tragedy, the Deathwatch beetle is a serious wood-boring pest. In houses, their tunnelling can cause major damage.

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

The common harvestman is familiar to us as the large, spindly spider-like creature that frequents gardens and houses. It predates on smaller invertebrates which it catches using hooks on the ends…

This sponge is found on rocky shores around the UK and looks like a thick bready crust (if you use your imagination a bit!).