Though, as a film, this follows standard procedures and isn't at all inventive, the content is all that seems to matter with Blackfish. Whilst this has been seen as sensationalist, and whilst I can certainly see evidence for that, this doesn't seem to be a film that wants entities like SeaWorld to change. Rather, this wants them gone. I find it very hard to rationally oppose this stance. Whilst people would lose money and jobs, and whilst orcas would be much harder to see, it seems to me that they should have never been put in concrete pools and made into an attraction. I don't have a particularly strong opinion on captivity and zoos, but, looking to orcas, it seems that we're dealing with a completely different kind of animal - one frighteningly close to people.
Though the documentary itself falls very subservient to these ideas, this seems to be a significant film.