Is this insect
a) a stick insect?
b) a grasshopper?
c) a katydid?
The first clue here is in those back legs; they are huge in comparison with the front and middle legs. This tells us that the insect in question is a member of the Orthoptera which includes all grasshoppers, crickets and katydids. The legs of a stick insect are more uniform in size. The second clue is in the antennae sticking out of the front of his head; katydids have long, whip-like antennae (often longer than their body) whereas grasshoppers have much shorter and thicker antennae. So, long back legs + short, thick antennae = answer b) a grasshopper.
Find more interesting nature facts in the latest Crete Nature post: Welcome To The Wildlife Hotel