Sandwalker is a legendary beast from Arab mythology. It is said to take the form of a giant, nocturnal crab about the size of a horse, with a bird-like beak, and a scorpion's tail.
It is known to bury itself in the sand during day to avoid detection, and only come out at night. It rarely eats humans, but it is said to steal camels and horses from caravans and eat them. If the creature walks it leaves crab-like tracks behind.