A great documentary film worth watching for its education value on the topic of the shark-finning industry alone. It goes a couple levels deeper than the usual documentaries you'll catch on discovery channel type shows which made the film quite captivating. Underwater scenes are well shot, although if all you want is some oceanic eyecandy go see 'Blue planet' instead. The real worth of the film comes from some of the undercover and handicam shooting of illegal sharkfin set ups, boat chases, etc...
Director Rob Stewart does a bit too much mugging for the camera which takes some focus away from the sharks, and the way he ends it left me scratching my head for a bit. But despite that, you can tell he is passionate about this topic. His narration and on-screen presence isn't all that hard-hitting, though some of the footage (the finning sequence especially) makes up for it.
Bottom line: As a shark lover, if I had my way I'd make everybody I know watch this movie. I've always felt it a shame that because sharks aren't cute and cuddly they've been left on the back burner of public conservation interest, and I hope it's movies like this that will start to change that.