An easy one to start with. Spot the common dab (Limanda limanda).
This guy is not hiding all that well either. Here is a Hebrew character moth (Orthosia gothica).
Look real close and you may see a female lesser nighthawk (Chordeiles acutipennis).
Peekaboo. This red knot (Calidris canutus rogersi) is incubating her nest.
A cunning disguise for this goldenrod crab spider (Misumena vatia). While we can easily spot it, predators would struggle.
Just two leaves, right?
Where is it?
Hint: you are looking for a little ringed plover (Charadrius dubius) nest among the rocks.
A bright green leaf?
No, a leaf katydid (Cycloptera speculata).
Just a tree?
Nope, also a goat moth (Cossus cossus).
Beautiful decoration on this colourful coral.
Or are those tiny brittlestars (Ophiuridae) wrapped around its branches?
…with a female greater sage-grouse (Centrocercus urophasianus) hidden somewhere in it.
What can you see in these leaves?
Is it a worm, is it a fly? No, it is an agile frog (Rana dalmatina).
Join over five million BBC Earth fans by liking us on Facebook, or follow us on Twitter and Instagram.
If you liked this story, sign up for the weekly bbc.com features newsletter called "If You Only Read 6 Things This Week". A handpicked selection of stories from BBC Future, Earth, Culture, Capital, Travel and Autos, delivered to your inbox every Friday.