@Nihiless well no but in many fantasy properties theres some kind of sand wurm/ sand sharks, that they think this desert isn't dangerous theres no animals but than DUN DUN DUUUUUUN and something appears its a fin, than a mouth, than a shark!
@popmol I think there are something similar like that in the desert, it's been so long since I watched animal documentaries and read books about them that I've forgotten most of it. You'll have to fill me in with the rest.