This paleontological restoration is inaccurate, or its accuracy is disputed.
Reason: Flippers too narrow, postflexural region too short and preflexural tail too long (based on Liu et al., 2013)
You may ask further questions about the accuracy of this image at the image review page of Wikiproject Palaeontology on the English Wikipedia. Note that this image may be appropriate to illustrate obsolete paleontological views.