Just back from six zoos in Belgium and the Netherlands - full photos to follow once I've finished off France but couldn't resist posting a few of the gems from Pairi Daiza straight away!
@Kakapo - they currently have one Olive Ridley and two Loggerheads - they're in the 'shark tunnel' halfway around the aquarium. The Olive Ridley looks quite a bit different but for avoidance of doubt it's the one missing its left-front flipper..!
Oh, what a shame! I hope to catch an angle where this injury is not visible, such as in your photo. The unique carapace plates of this genus are, however, enough distinctive even in a not injured specimen