Version reviewed: GoodTimes DVD, "Special Twenty-Fifth Anniversary Edition", 2002, 95 minutes
My personal enjoyment rating: 10 out of 10
My recommendation rating: 9 out of 10. Explanation of recommendation rating: "A must see for everyone who is a fan of the genre. Anyone seriously or casually interested in film should enjoy it or at least find something interesting about it."
In my view, this is one of the best entries in the "Nature Gone Wild" subgenre of horror. While it's firmly entrenched in its mid-1970's style--which means that fans looking only for lots of gore, action, big-budget special effects and lots of gratuitous nudity should look elsewhere (although none of these elements are quite absent)--director John "Bud" Cardos (who also directed the underrated _Mutant_ in 1984) manages to make the film surprisingly visceral and downbeat, especially in contrast to an almost "made-for-television" sheen. The real triumph of the film is that, fueled by the performances (including a great one from star William Shatner), it begins like an intriguing and slightly comic drama, and gradually turns into a nihilistic shocker, with all the atmosphere of (and a couple literal nods to) Alfred Hitchcock's _The Birds_ (1963) and George Romero's _Night Of The Living Dead_ (1969), and it has a serious environmental and philosophical subplot/subtext to boot (as does _Mutant_).
On the negative side, this GoodTimes DVD, despite the "Special Edition" moniker, only contains a decent transfer (it's clear with good sound, but a bit wobbly a couple times), in full screen (which may or may not be the original aspect ratio), and no special features. Still, despite this drawback, it's great to have this film on DVD, and you shouldn't pass it up.