Swifts spend most of their lives flying – even sleeping, eating and drinking – only ever landing to nest. They like to nest in older buildings in small holes in roof spaces.

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.

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.