Bizarre bums
In the animal kingdom, bums can do so much more than just poo! Discover some weird and wonderful animal bums.
Water vole by Terry Whittaker/2020VISION
This slender shark gets its name from the spines in front of its dorsal fin. It can use these spines to defend itself by curling in a bow and striking at a predator.
The marsh hair moss is the largest moss in the UK. Look out for it in damp woodland and on boggy heathlands where it forms large, green and spikey 'cushions'.
On Skomer Island, Grace can set her own trends and live a life of adventure, from creating fashionable jewellery out of daisies to exploring the wild landscape.
This large skate has tiny, prickly spines all over its back.
Be a wildlife saviour and do a litter pick or beach clean!