Nudibranchs, also known as sea slugs, are much like their land-based relatives that you may spot in your garden. But, unlike your regular garden slug, the nudibranch can incorporate the stinging…

A lovely pale cream colour to begin with these stout mushrooms begin to turn a buff colour and the cap surface will crack as they age.

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

This clown-like fish is a favourite amongst divers and snorkellers. They are inquisitive little souls and will investigate divers near their hidey-hole homes.

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!

This large brittlestar can be found in rockpools around much of the UK, but be gentle - its arms are very brittle and will break off if disturbed.

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