Actually looks like a tortoise, I couldn't say what species off hand. I would bet that is a baby, of one of the smaller species. It almost has to grow from that size. I've never seen an adult tortoise that small. I would guess an Egyptian tortoise, hermanns tortoise, Greek tortoise, etc... One of the Mediterranean species.
Well, this could be debatable in common terminology. A true tortoise is in the Testudinidae family. A family of land dwelling chelonians. There are a number of families of turtles. Most aquatic or semi-aquatic.
They don't have webbed feet, are completely terrestrial, typically have the visible claws. I am not sure of all the exact scientific differences though.